Sunan an-Nasa'i 2092
It was narrated that Anas bin Malik said:
"While we were sitting in the Masjid, a man came on a camel and made it keneel in the Masjid, then he hobbled it and said to them: 'Which of you is Muhammad?' The Messenger of Allah was reclining amid his Companions, and we said to him: This white man who is reclining.' The man said to him: 'O son of 'Abdul-Muttalib.' The Messenger of Allah said: ' I have answered you.' The man said; 'O Muhammad, I am going to ask you questions, and I will be harsh in asking; do not get upset.; The man said: 'I adjure you by your Lord and the Lord of those who cam before you, has Allah sent you to all the people?' The Messenger of Allah said: 'By Allah, yes.' He said; 'I adjure you by Allah, has Allah commanded you to offer five prayers each day and night?' The Messenger of Allah said: 'By Allah, yes.; He said: 'I adjure you by Allah, has Allah commanded you to fast this month each year? The Messenger of Allah said: 'By Allah, Yes.' He said: 'I adjure you by Allah, has Allah commanded you to take this charity from our rich and distribute it among our poor?' The Messenger of Allah said. 'By Allah, yes.' The man said: 'I believe in that which you have brought, and I am the envoy of my people who are coming after me. I am Dimam bin Thalabah, the brother of Banu sad bin Bakr."' Yaqub bin Ibrahim contradicted him.
أَخْبَرَنَا عِيسَى بْنُ حَمَّادٍ، عَنِ اللَّيْثِ، عَنْ سَعِيدٍ، عَنْ شَرِيكِ بْنِ أَبِي نَمِرٍ، أَنَّهُ سَمِعَ أَنَسَ بْنَ مَالِكٍ، يَقُولُ بَيْنَا نَحْنُ جُلُوسٌ فِي الْمَسْجِدِ جَاءَ رَجُلٌ عَلَى جَمَلٍ فَأَنَاخَهُ فِي الْمَسْجِدِ ثُمَّ عَقَلَهُ فَقَالَ لَهُمْ أَيُّكُمْ مُحَمَّدٌ - وَرَسُولُ اللَّهِ صلى الله عليه وسلم مُتَّكِئٌ بَيْنَ ظَهْرَانَيْهِمْ - قُلْنَا لَهُ هَذَا الرَّجُلُ الأَبْيَضُ الْمُتَّكِئُ فَقَالَ لَهُ الرَّجُلُ يَا ابْنَ عَبْدِ الْمُطَّلِبِ ‏.‏ فَقَالَ لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ قَدْ أَجَبْتُكَ ‏"‏ ‏.‏ فَقَالَ الرَّجُلُ إِنِّي سَائِلُكَ يَا مُحَمَّدُ فَمُشَدِّدٌ عَلَيْكَ فِي الْمَسْأَلَةِ فَلاَ تَجِدَنَّ فِي نَفْسِكَ ‏.‏ قَالَ ‏"‏ سَلْ مَا بَدَا لَكَ ‏"‏ ‏.‏ فَقَالَ الرَّجُلُ نَشَدْتُكَ بِرَبِّكَ وَرَبِّ مَنْ قَبْلَكَ آللَّهُ أَرْسَلَكَ إِلَى النَّاسِ كُلِّهِمْ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ اللَّهُمَّ نَعَمْ ‏"‏ ‏.‏ قَالَ فَأَنْشُدُكَ اللَّهَ آللَّهُ أَمَرَكَ أَنْ تُصَلِّيَ الصَّلَوَاتِ الْخَمْسَ فِي الْيَوْمِ وَاللَّيْلَةِ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ اللَّهُمَّ نَعَمْ ‏"‏ ‏.‏ قَالَ فَأَنْشُدُكَ اللَّهَ آللَّهُ أَمَرَكَ أَنْ تَصُومَ هَذَا الشَّهْرَ مِنَ السَّنَةِ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ اللَّهُمَّ نَعَمْ ‏"‏ ‏.‏ قَالَ فَأَنْشُدُكَ اللَّهَ آللَّهُ أَمَرَكَ أَنْ تَأْخُذَ هَذِهِ الصَّدَقَةَ مِنْ أَغْنِيَائِنَا فَتَقْسِمَهَا عَلَى فُقَرَائِنَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ اللَّهُمَّ نَعَمْ ‏"‏ ‏.‏ فَقَالَ الرَّجُلُ آمَنْتُ بِمَا جِئْتَ بِهِ وَأَنَا رَسُولُ مَنْ وَرَائِي مِنْ قَوْمِي وَأَنَا ضِمَامُ بْنُ ثَعْلَبَةَ أَخُو بَنِي سَعْدِ بْنِ بَكْرٍ ‏.‏ خَالَفَهُ يَعْقُوبُ بْنُ إِبْرَاهِيمَ ‏.‏