The Prophet ﷺ sent Muʿadh to Yemen and said, "Invite the people to testify that none has the right to be worshipped but Allah and I am Messenger of Allah ﷺ, and if they obey you to do so, then teach them that Allah has enjoined on them five prayers in every day and night (in twenty-four hours), and if they obey you to do so, then teach them that Allah has made it obligatory for them to pay the Zakat from their property and it is to be taken from the wealthy among them and given to the poor."  

أَنَّ النَّبِيَّ ﷺ بَعَثَ مُعَاذًا ؓ إِلَى الْيَمَنِ فَقَالَ ادْعُهُمْ إِلَى شَهَادَةِ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنِّي رَسُولُ اللَّهِ فَإِنْ هُمْ أَطَاعُوا لِذَلِكَ فَأَعْلِمْهُمْ أَنَّ اللَّهَ قَدِ افْتَرَضَ عَلَيْهِمْ خَمْسَ صَلَوَاتٍ فِي كُلِّ يَوْمٍ وَلَيْلَةٍ فَإِنْ هُمْ أَطَاعُوا لِذَلِكَ فَأَعْلِمْهُمْ أَنَّ اللَّهَ افْتَرَضَ عَلَيْهِمْ صَدَقَةً فِي أَمْوَالِهِمْ تُؤْخَذُ مِنْ أَغْنِيَائِهِمْ وَتُرَدُّ عَلَى فُقَرَائِهِمْ  

A man said to the Prophet ﷺ "Tell me of such a deed as will make me enter Paradise." The people said, "What is the matter with him? What is the matter with him?" The Prophet ﷺ said, "He has something to ask. (What he needs greatly) The Prophet ﷺ said: (In order to enter Paradise) you should worship Allah and do not ascribe any partners to Him, offer prayer perfectly, pay the Zakat and keep good relations with your Kith and kin." (See Hadith No. 12, Vol 8).  

لِلنَّبِيِّ ﷺ أَخْبِرْنِي بِعَمَلٍ يُدْخِلُنِي الْجَنَّةَ قَالَ مَا لَهُ مَا لَهُ وَقَالَ النَّبِيُّ ﷺ أَرَبٌ مَالَهُ تَعْبُدُ اللَّهَ وَلاَ تُشْرِكُ بِهِ شَيْئًا وَتُقِيمُ الصَّلاَةَ وَتُؤْتِي الزَّكَاةَ وَتَصِلُ الرَّحِمَ وَقَالَ بَهْزٌ حَدَّثَنَا شُعْبَةُ حَدَّثَنَا مُحَمَّدُ بْنُ عُثْمَانَ وَأَبُوهُ عُثْمَانُ بْنُ عَبْدِ اللَّهِ أَنَّهُمَا سَمِعَا مُوسَى بْنَ طَلْحَةَ عَنْ أَبِي أَيُّوبَ بِهَذَا قَالَ أَبُو عَبْدِ اللَّهِ أَخْشَى أَنْ يَكُونَ مُحَمَّدٌ غَيْرَ مَحْفُوظٍ إِنَّمَا هُوَ عَمْرٌو  

A Bedouin came to the Prophet ﷺ and said, "Tell me of such a deed as will make me enter Paradise, if I do it." The Prophet ﷺ said, "Worship Allah, and worship none along with Him, offer the (five) prescribed compulsory prayers perfectly, pay the compulsory Zakat, and fast the month of Ramadan." The Bedouin said, "By Him, in Whose Hands my life is, I will not do more than this."

When he (the Bedouin) left, the Prophet ﷺ said, "Whoever likes to see a man of Paradise, then he may look at this man." Narrated Abu Zur'a: From the Prophet ﷺ the same as above.  

أَنَّ أَعْرَابِيًّا أَتَى النَّبِيَّ ﷺ فَقَالَ: دُلَّنِي عَلَى عَمَلٍ إِذَا عَمِلْتُهُ دَخَلْتُ الْجَنَّةَ۔ قَالَ: «تَعْبُدُ اللَّهَ، لاَ تُشْرِكُ بِهِ شَيْئًا، وَتُقِيمُ الصَّلاَةَ، الْمَكْتُوبَةَ، وَتُؤَدِّي الزَّكَاةَ الْمَفْرُوضَةَ، وَتَصُومُ رَمَضَانَ۔» قَالَ: وَالَّذِي نَفْسِي بِيَدِهِ لاَ أَزِيدُ عَلَى هَذَا۔

فَلَمَّا وَلَّى، قَالَ النَّبِيُّ ﷺ: «مَنْ سَرَّهُ أَنْ يَنْظُرَ إِلَى رَجُلٍ مِنْ أَهْلِ الْجَنَّةِ فَلْيَنْظُرْ إِلَى هَذَا۔»  

A delegation of the tribe of ʿAbdul Qais came to the Prophet ﷺ and said, "O Messenger of Allah ﷺ! We are from the tribe of Rabiʿa, and the infidels of the tribe of Mudar stands between us and you; so we cannot come to you except during the Sacred Months. Please order us to do something (religious deeds) which we may carry out and also invite to it our people whom we have left behind." The Prophet said, "I order you to do four things and forbid you four others: (I order you) to have faith in Allah, and confess that none has the right to be worshipped but Allah, (and the Prophet ﷺ gestured with his hand like this (i.e. one knot) and to offer prayers perfectly and to pay the Zakat, and to pay onefifth of the booty in Allah's Cause. And I forbid you to use Dubba', Hantam, Naqir and Muzaffat (all these are the names of utensils used for preparing alcoholic drinks)."  

قَدِمَ وَفْدُ عَبْدِ الْقَيْسِ عَلَى النَّبِيِّ ﷺ فَقَالُوا يَا رَسُولَ اللَّهِ إِنَّ هَذَا الْحَىَّ مِنْ رَبِيعَةَ قَدْ حَالَتْ بَيْنَنَا وَبَيْنَكَ كُفَّارُ مُضَرَ وَلَسْنَا نَخْلُصُ إِلَيْكَ إِلاَّ فِي الشَّهْرِ الْحَرَامِ فَمُرْنَا بِشَىْءٍ نَأْخُذُهُ عَنْكَ وَنَدْعُو إِلَيْهِ مَنْ وَرَاءَنَا قَالَ آمُرُكُمْ بِأَرْبَعٍ وَأَنْهَاكُمْ عَنْ أَرْبَعٍ الإِيمَانِ بِاللَّهِ وَشَهَادَةِ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَعَقَدَ بِيَدِهِ هَكَذَا وَإِقَامِ الصَّلاَةِ وَإِيتَاءِ الزَّكَاةِ وَأَنْ تُؤَدُّوا خُمُسَ مَا غَنِمْتُمْ وَأَنْهَاكُمْ عَنِ الدُّبَّاءِ وَالْحَنْتَمِ وَالنَّقِيرِ وَالْمُزَفَّتِ  

When Messenger of Allah ﷺ died and Abu Bakr became the caliph some Arabs renegade (reverted to disbelief) (Abu Bakr decided to declare war against them), ʿUmar, said to Abu Bakr, "How can you fight with these people although Messenger of Allah ﷺ said, 'I have been ordered (by Allah) to fight the people till they say: "None has the right to be worshipped but Allah, and whoever said it then he will save his life and property from me except on trespassing the law (rights and conditions for which he will be punished justly), and his accounts will be with Allah.' " Abu Bakr said, "By Allah! I will fight those who differentiate between the prayer and the Zakat as Zakat is the compulsory right to be taken from the property (according to Allah's orders) By Allah! If they refuse to pay me even a she-kid which they used to pay at the time of Messenger of Allah ﷺ . I would fight with them for withholding it" Then ʿUmar said, "By Allah, it was nothing, but Allah opened Abu Bakr's chest towards the decision (to fight) and I came to know that his decision was right."  

لَمَّا تُوُفِّيَ رَسُولُ اللَّهِ ﷺ وَكَانَ أَبُو بَكْرٍ ؓ وَكَفَرَ مَنْ كَفَرَ مِنَ الْعَرَبِ فَقَالَ عُمَرُ ؓ كَيْفَ تُقَاتِلُ النَّاسَ وَقَدْ قَالَ رَسُولُ اللَّهِ ﷺ أُمِرْتُ أَنْ أُقَاتِلَ النَّاسَ حَتَّى يَقُولُوا لاَ إِلَهَ إِلاَّ اللَّهُ فَمَنْ قَالَهَا فَقَدْ عَصَمَ مِنِّي مَالَهُ وَنَفْسَهُ إِلاَّ بِحَقِّهِ وَحِسَابُهُ عَلَى اللَّهِ فَقَالَ وَاللَّهِ لأُقَاتِلَنَّ مَنْ فَرَّقَ بَيْنَ الصَّلاَةِ وَالزَّكَاةِ فَإِنَّ الزَّكَاةَ حَقُّ الْمَالِ وَاللَّهِ لَوْ مَنَعُونِي عَنَاقًا كَانُوا يُؤَدُّونَهَا إِلَى رَسُولِ اللَّهِ ﷺ لَقَاتَلْتُهُمْ عَلَى مَنْعِهَا قَالَ عُمَرُ ؓ فَوَاللَّهِ مَا هُوَ إِلاَّ أَنْ قَدْ شَرَحَ اللَّهُ صَدْرَ أَبِي بَكْرٍ ؓ فَعَرَفْتُ أَنَّهُ الْحَقُّ