The Prophet ﷺ bought a horse from a Bedouin. The Prophet ﷺ took him with him to pay him the price of his horse. The Messenger of Allah ﷺ walked quickly and the Bedouin walked slowly. The people stopped the Bedouin and began to bargain with him for the horse as and they did not know that the Prophet ﷺ had bought it. The Bedouin called the Messenger of Allah ﷺ saying: If you want this horse, (then buy it), otherwise I shall sell it. The Prophet ﷺ stopped when he heard the call of the Bedouin, and said: Have I not bought it from you? The Bedouin said: I swear by Allah, I have not sold it to you. The Prophet ﷺ said: Yes, I have bought it from you. The Bedouin began to say: Bring a witness. Khuzaymah ibn Thabit then said: I bear witness that you have bought it. The Prophet ﷺ turned to Khuzaymah and said: On what (grounds) do you bear witness? He said: By considering you trustworthy, Messenger of Allah ﷺ! The Prophet ﷺ made the witness of Khuzaymah equivalent to the witness of two people.  

وَهُوَ مِنْ أَصْحَابِ النَّبِيِّ ﷺ أَنَّ النَّبِيَّ ﷺ ابْتَاعَ فَرَسًا مِنْ أَعْرَابِيٍّ فَاسْتَتْبَعَهُ النَّبِيُّ ﷺ لِيَقْضِيَهُ ثَمَنَ فَرَسِهِ فَأَسْرَعَ رَسُولُ اللَّهِ ﷺ الْمَشْىَ وَأَبْطَأَ الأَعْرَابِيُّ فَطَفِقَ رِجَالٌ يَعْتَرِضُونَ الأَعْرَابِيَّ فَيُسَاوِمُونَهُ بِالْفَرَسِ وَلاَ يَشْعُرُونَ أَنَّ النَّبِيَّ ﷺ ابْتَاعَهُ فَنَادَى الأَعْرَابِيُّ رَسُولَ اللَّهِ ﷺ فَقَالَ إِنْ كُنْتَ مُبْتَاعًا هَذَا الْفَرَسَ وَإِلاَّ بِعْتُهُ فَقَامَ النَّبِيُّ ﷺ حِينَ سَمِعَ نِدَاءَ الأَعْرَابِيِّ فَقَالَ أَوَلَيْسَ قَدِ ابْتَعْتُهُ مِنْكَ فَقَالَ الأَعْرَابِيُّ لاَ وَاللَّهِ مَا بِعْتُكَهُ فَقَالَ النَّبِيُّ ﷺ بَلَى قَدِ ابْتَعْتُهُ مِنْكَ فَطَفِقَ الأَعْرَابِيُّ يَقُولُ هَلُمَّ شَهِيدًا فَقَالَ خُزَيْمَةُ بْنُ ثَابِتٍ أَنَا أَشْهَدُ أَنَّكَ قَدْ بَايَعْتَهُ فَأَقْبَلَ النَّبِيُّ ﷺ عَلَى خُزَيْمَةَ فَقَالَ بِمَ تَشْهَدُ فَقَالَ بِتَصْدِيقِكَ يَا رَسُولَ اللَّهِ فَجَعَلَ رَسُولُ اللَّهِ ﷺ شَهَادَةَ خُزَيْمَةَ بِشَهَادَةِ رَجُلَيْنِ