The Prophet ﷺ said, "Allah forgives my followers those (evil deeds) their souls may whisper or suggest to them as long as they do not act (on it) or speak."  

إِنَّ اللَّهَ تَجَاوَزَ لأُمَّتِي عَمَّا وَسْوَسَتْ أَوْ حَدَّثَتْ بِهِ أَنْفُسَهَا مَا لَمْ تَعْمَلْ بِهِ أَوْ تَكَلَّمْ  

While the Prophet ﷺ was delivering a sermon on the Day of Nahr (i.e., 10th Dhul-Hijja-Day of slaughtering the sacrifice), a man got up saying, "I thought, O Messenger of Allah ﷺ, such-and-such a thing was to be done before such-and-such a thing." Another man got up, saying, "O Messenger of Allah ﷺ! As regards these three (acts of Hajj), thought so-and-so." The Prophet ﷺ said, "Do, and there is no harm," concerning all those matters on that day. And so, on that day, whatever question he was asked, he said, "Do it, do it, and there is no harm therein."  

أَنَّ النَّبِيَّ ﷺ بَيْنَمَا هُوَ يَخْطُبُ يَوْمَ النَّحْرِ إِذْ قَامَ إِلَيْهِ رَجُلٌ فَقَالَ كُنْتُ أَحْسِبُ يَا رَسُولَ اللَّهِ كَذَا وَكَذَا قَبْلَ كَذَا وَكَذَا ثُمَّ قَامَ آخَرُ فَقَالَ يَا رَسُولَ اللَّهِ كُنْتُ أَحْسِبُ كَذَا وَكَذَا لِهَؤُلاَءِ الثَّلاَثِ فَقَالَ النَّبِيُّ ﷺ افْعَلْ وَلاَ حَرَجَ لَهُنَّ كُلِّهِنَّ يَوْمَئِذٍ فَمَا سُئِلَ يَوْمَئِذٍ عَنْ شَىْءٍ إِلاَّ قَالَ افْعَلْ وَلاَ حَرَجَ  

A man said to the Prophet (while he was delivering a sermon on the Day of Nahr), "I have performed the Tawaf round the Kaʿba before the Rami (throwing pebbles) at the Jamra." The Prophet ﷺ said, "There is no harm (therein)." Another man said, "I had my head shaved before slaughtering (the sacrifice)." The Prophet ﷺ said, "There is no harm." A third said, "I have slaughtered (the sacrifice) before the Rami (throwing pebbles) at the Jamra." The Prophet ﷺ said, "There is no harm."  

رَجُلٌ لِلنَّبِيِّ ﷺ زُرْتُ قَبْلَ أَنْ أَرْمِيَ قَالَ لاَ حَرَجَ قَالَ آخَرُ حَلَقْتُ قَبْلَ أَنْ أَذْبَحَ قَالَ لاَ حَرَجَ قَالَ آخَرُ ذَبَحْتُ قَبْلَ أَنْ أَرْمِيَ قَالَ لاَ حَرَجَ  

A man entered the mosque and started praying while Messenger of Allah ﷺ was sitting somewhere in the mosque. Then (after finishing the prayer) the man came to the Prophet ﷺ and greeted him. The Prophet ﷺ said to him, "Go back and pray, for you have not prayed. The man went back, and having prayed, he came and greeted the Prophet. The Prophet ﷺ after returning his greetings said, "Go back and pray, for you did not pray." On the third time the man said, "(O Messenger of Allah ﷺ!) teach me (how to pray)." The Prophet said, "When you get up for the prayer, perform the ablution properly and then face the Qibla and say Takbir (Allahu Akbar), and then recite of what you know of the Qur'an, and then bow, and remain in this state till you feel at rest in bowing, and then raise your head and stand straight; and then prostrate till you feel at rest in prostration, and then sit up till you feel at rest while sitting; and then prostrate again till you feel at rest in prostration; and then get up and stand straight, and do all this in all your prayers."  

أَنَّ رَجُلاً دَخَلَ الْمَسْجِدَ يُصَلِّي وَرَسُولُ اللَّهِ ﷺ فِي نَاحِيَةِ الْمَسْجِدِ فَجَاءَ فَسَلَّمَ عَلَيْهِ فَقَالَ لَهُ ارْجِعْ فَصَلِّ فَإِنَّكَ لَمْ تُصَلِّ فَرَجَعَ فَصَلَّى ثُمَّ سَلَّمَ فَقَالَ وَعَلَيْكَ ارْجِعْ فَصَلِّ فَإِنَّكَ لَمْ تُصَلِّ قَالَ فِي الثَّالِثَةِ فَأَعْلِمْنِي قَالَ إِذَا قُمْتَ إِلَى الصَّلاَةِ فَأَسْبِغِ الْوُضُوءَ ثُمَّ اسْتَقْبِلِ الْقِبْلَةَ فَكَبِّرْ وَاقْرَأْ بِمَا تَيَسَّرَ مَعَكَ مِنَ الْقُرْآنِ ثُمَّ ارْكَعْ حَتَّى تَطْمَئِنَّ رَاكِعًا ثُمَّ ارْفَعْ رَأْسَكَ حَتَّى تَعْتَدِلَ قَائِمًا ثُمَّ اسْجُدْ حَتَّى تَطْمَئِنَّ سَاجِدًا ثُمَّ ارْفَعْ حَتَّى تَسْتَوِيَ وَتَطْمَئِنَّ جَالِسًا ثُمَّ اسْجُدْ حَتَّى تَطْمَئِنَّ سَاجِدًا ثُمَّ ارْفَعْ حَتَّى تَسْتَوِيَ قَائِمًا ثُمَّ افْعَلْ ذَلِكَ فِي صَلاَتِكَ كُلِّهَا  

When the pagans were defeated during the (first stage) of the battle of Uhud, Satan shouted, "O Allah's slaves! Beware of what is behind you!" So the front files of the Muslims attacked their own back files. Hudhaifa bin Al-Yaman looked and on seeing his father he shouted: "My father! My father!" By Allah! The people did not stop till they killed his father. Hudhaifa then said, "May Allah forgive you." ʿUrwa (the sub-narrator) added, "Hudhaifa continued asking Allah forgiveness for the killers of his father till he met Allah (till he died).  

عُرْوَةُ فَوَاللَّهِ مَا زَالَتْ فِي حُذَيْفَةَ مِنْهَا بَقِيَّةٌ حَتَّى لَقِيَ اللَّهَ  

The Prophet ﷺ said, "If somebody eats something forgetfully while he is fasting, then he should complete his fast, for Allah has made him eat and drink."  

قَالَ النَّبِيُّ ﷺ مَنْ أَكَلَ نَاسِيًا وَهْوَ صَائِمٌ فَلْيُتِمَّ صَوْمَهُ فَإِنَّمَا أَطْعَمَهُ اللَّهُ وَسَقَاهُ  

Once Messenger of Allah ﷺ led us in prayer, and after finishing the first two rakʿat, got up (instead of sitting for at-Tahiyyat) and then carried on with the prayer. When he had finished his prayer, the people were waiting for him to say Taslim, but before saying Tasiim, he said Takbir and prostrated; then he raised his head, and saying Takbir, he prostrated (SAHU) and then raised his head and finished his prayer with Taslim.  

صَلَّى بِنَا النَّبِيُّ ﷺ فَقَامَ فِي الرَّكْعَتَيْنِ الأُولَيَيْنِ قَبْلَ أَنْ يَجْلِسَ فَمَضَى فِي صَلاَتِهِ فَلَمَّا قَضَى صَلاَتَهُ انْتَظَرَ النَّاسُ تَسْلِيمَهُ وَسَجَدَ قَبْلَ أَنْ يُسَلِّمَ ثُمَّ رَفَعَ رَأْسَهُ ثُمَّ كَبَّرَ وَسَجَدَ ثُمَّ رَفَعَ رَأْسَهُ وَسَلَّمَ  

that Allah's Prophet led them in the Zuhr prayer and he offered either more or less rakʿat, and it was said to him, "O Messenger of Allah ﷺ ! Has the prayer been reduced, or have you forgotten?" He asked, "What is that?" They said, "You have prayed so many rakʿat." So he performed with them two more prostrations and said, "These two prostrations are to be performed by the person who does not know whether he has prayed more or less (rakʿat) in which case he should seek to follow what is right. And then complete the rest (of the prayer) and perform two extra prostrations."  

أَنَّ نَبِيَّ اللَّهِ ﷺ صَلَّى بِهِمْ صَلاَةَ الظُّهْرِ فَزَادَ أَوْ نَقَصَ مِنْهَا قَالَ مَنْصُورٌ لاَ أَدْرِي إِبْرَاهِيمُ وَهِمَ أَمْ عَلْقَمَةُ قَالَ قِيلَ يَا رَسُولَ اللَّهِ أَقَصُرَتِ الصَّلاَةُ أَمْ نَسِيتَ قَالَ وَمَا ذَاكَ قَالُوا صَلَّيْتَ كَذَا وَكَذَا قَالَ فَسَجَدَ بِهِمْ سَجْدَتَيْنِ ثُمَّ قَالَ هَاتَانِ السَّجْدَتَانِ لِمَنْ لاَ يَدْرِي زَادَ فِي صَلاَتِهِ أَمْ نَقَصَ فَيَتَحَرَّى الصَّوَابَ فَيُتِمُّ مَا بَقِيَ ثُمَّ يَسْجُدُ سَجْدَتَيْنِ  

that he heard Messenger of Allah ﷺ saying, "(Moses) said, 'Call me not to account for what I forget and be not hard upon me for my affair (with you)' (18.73) the first excuse of Moses was his forgetfulness."  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ {لاَ تُؤَاخِذْنِي بِمَا نَسِيتُ وَلاَ تُرْهِقْنِي مِنْ أَمْرِي عُسْرًا} قَالَ كَانَتِ الأُولَى مِنْ مُوسَى نِسْيَانًا  

Narrated Al-Bara bin Azib that once he had a guest, so he told his family (on the Day of Id-ul-Adha) that they should slaughter the animal for sacrifice before he returned from the ('Id) prayer in order that their guest could take his meal. So his family slaughtered (the animal ) before the prayer. Then they mentioned that event to the Prophet who ordered Al-Bara to slaughter another sacrifice. Al-Bara' said to the Prophet ﷺ , "I have a young milch she-goat which is better than two sheep for slaughtering." (The sub-narrator, Ibn 'Aun used to say, "I don't know whether the permission (to slaughter a she-goat as a sacrifice) was especially given to Al-Bara' or if it was in general for all the Muslims.") (See Hadith No. 99, Vol. 2.)  

أَنْ يَرْجِعَ لِيَأْكُلَ ضَيْفُهُمْ فَذَبَحُوا قَبْلَ الصَّلاَةِ فَذَكَرُوا ذَلِكَ لِلنَّبِيِّ ﷺ فَأَمَرَهُ أَنْ يُعِيدَ الذَّبْحَ فَقَالَ يَا رَسُولَ اللَّهِ عِنْدِي عَنَاقٌ جَذَعٌ عَنَاقُ لَبَنٍ هِيَ خَيْرٌ مِنْ شَاتَىْ لَحْمٍ فَكَانَ ابْنُ عَوْنٍ يَقِفُ فِي هَذَا الْمَكَانِ عَنْ حَدِيثِ الشَّعْبِيِّ وَيُحَدِّثُ عَنْ مُحَمَّدِ بْنِ سِيرِينَ بِمِثْلِ هَذَا الْحَدِيثِ وَيَقِفُ فِي هَذَا الْمَكَانِ وَيَقُولُ لاَ أَدْرِي أَبَلَغَتِ الرُّخْصَةُ غَيْرَهُ أَمْ لاَ رَوَاهُ أَيُّوبُ عَنِ ابْنِ سِيرِينَ عَنْ أَنَسٍ عَنِ النَّبِيِّ ﷺ  

I witnessed the Prophet ﷺ offering the ʿId prayer (and after finishing it) he delivered a sermon and said, "Whoever has slaughtered his sacrifice (before the prayer) should make up for it (i.e. slaughter another animal) and whoever has not slaughtered his sacrifice yet, should slaughter it by mentioning Allah's Name over it."  

شَهِدْتُ النَّبِيَّ ﷺ صَلَّى يَوْمَ عِيدٍ ثُمَّ خَطَبَ ثُمَّ قَالَ مَنْ ذَبَحَ فَلْيُبَدِّلْ مَكَانَهَا وَمَنْ لَمْ يَكُنْ ذَبَحَ فَلْيَذْبَحْ بِاسْمِ اللَّهِ