Messenger of Allah ﷺ stopped (for a while near the Jimar at Mina) during his last Hajj and the people started asking him questions. A man said, "Ignorantly I got my head shaved before slaughtering." The Prophet replied, "Slaughter (now) and there is no harm in it." Another man said, "Unknowingly I slaughtered the Hadi before doing the Rami." The Prophet ﷺ said, "Do Rami now and there is no harm in it." So, on that day, when the Prophet ﷺ was asked about anything (about the ceremonies of Hajj) done before or after (its stated time) his reply was, "Do it (now) and there is no harm."  

أَنَّ رَسُولَ اللَّهِ ﷺ وَقَفَ فِي حَجَّةِ الْوَدَاعِ فَجَعَلُوا يَسْأَلُونَهُ فَقَالَ رَجُلٌ لَمْ أَشْعُرْ فَحَلَقْتُ قَبْلَ أَنْ أَذْبَحَ قَالَ اذْبَحْ وَلاَ حَرَجَ فَجَاءَ آخَرُ فَقَالَ لَمْ أَشْعُرْ فَنَحَرْتُ قَبْلَ أَنْ أَرْمِيَ قَالَ ارْمِ وَلاَ حَرَجَ فَمَا سُئِلَ يَوْمَئِذٍ عَنْ شَىْءٍ قُدِّمَ وَلاَ أُخِّرَ إِلاَّ قَالَ افْعَلْ وَلاَ حَرَجَ  

I witnessed the Prophet ﷺ when he was delivering the sermon on the Day of Nahr. A man stood up and said, "I thought that such and such was to be done before such and such. I got my hair shaved before slaughtering." (Another said), "I slaughtered the Hadi before doing the Rami." So, the people asked about many similar things. The Prophet ﷺ said, "Do it (now) and there is no harm in all these cases." Whenever the Prophet ﷺ was asked about anything on that day, he replied, "Do it (now) and there is no harm in it."  

أَنَّهُ شَهِدَ النَّبِيَّ ﷺ يَخْطُبُ يَوْمَ النَّحْرِ فَقَامَ إِلَيْهِ رَجُلٌ فَقَالَ كُنْتُ أَحْسِبُ أَنَّ كَذَا قَبْلَ كَذَا ثُمَّ قَامَ آخَرُ فَقَالَ كُنْتُ أَحْسِبُ أَنَّ كَذَا قَبْلَ كَذَا حَلَقْتُ قَبْلَ أَنْ أَنْحَرَ نَحَرْتُ قَبْلَ أَنْ أَرْمِيَ وَأَشْبَاهَ ذَلِكَ فَقَالَ النَّبِيُّ ﷺ افْعَلْ وَلاَ حَرَجَ لَهُنَّ كُلِّهِنَّ فَمَا سُئِلَ يَوْمَئِذٍ عَنْ شَىْءٍ إِلاَّ قَالَ افْعَلْ وَلاَ حَرَجَ  

Messenger of Allah ﷺ stopped while on his she-camel (the sub-narrator then narrated the Hadith as above, i.e. 793).  

وَقَفَ رَسُولُ اللَّهِ ﷺ عَلَى نَاقَتِهِ فَذَكَرَ الْحَدِيثَ