Sahih Muslim 715 r
Jabir (Allah be pleased with him) reported:
My camel had grown tired as Allah's Messenger (ﷺ) came to me. He goaded it and it began to jump. After that I tried to restrain its rein so that I could listen to his (Prophet's) words, but I could not do that. Allah's Apostle (ﷺ) met me and said: Sell it to me, and I sold it for five 'uqiyas. I said: On the condition that I may use it as a ride (for going back) to Medina. He (the Holy Prophet) said: Well, you may use it as a ride up till Medina. When I came to Medina I handed over that to him and he made an addition of an uqiya (to that amount which had been agreed upon) and then presented that (camel) to me.
وَحَدَّثَنِي أَبُو الرَّبِيعِ الْعَتَكِيُّ، حَدَّثَنَا حَمَّادٌ، حَدَّثَنَا أَيُّوبُ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ لَمَّا أَتَى عَلَىَّ النَّبِيُّ صلى الله عليه وسلم وَقَدْ أَعْيَا بَعِيرِي - قَالَ - فَنَخَسَهُ فَوَثَبَ - فَكُنْتُ بَعْدَ ذَلِكَ أَحْبِسُ خِطَامَهُ لأَسْمَعَ حَدِيثَهُ فَمَا أَقْدِرُ عَلَيْهِ فَلَحِقَنِي النَّبِيُّ صلى الله عليه وسلم فَقَالَ ‏"‏ بِعْنِيهِ ‏"‏ ‏.‏ فَبِعْتُهُ مِنْهُ بِخَمْسِ أَوَاقٍ - قَالَ - قُلْتُ عَلَى أَنَّ لِي ظَهْرَهُ إِلَى الْمَدِينَةِ ‏.‏ قَالَ ‏"‏ وَلَكَ ظَهْرُهُ إِلَى الْمَدِينَةِ ‏"‏ ‏.‏ قَالَ فَلَمَّا قَدِمْتُ الْمَدِينَةَ أَتَيْتُهُ بِهِ فَزَادَنِي وُقِيَّةً ثُمَّ وَهَبَهُ لِي ‏.‏