"The Messenger of Allah ﷺ took a camel of a particular age on loan. He gave back to him a camel of a better age than the one he was given. He said: 'The best among you is the best in repaying.'" He said: There is something on this topic from Abu Rafi'.  

اسْتَقْرَضَ رَسُولُ اللَّهِ ﷺ سِنًّا فَأَعْطَاهُ سِنًّا خَيْرًا مِنْ سِنِّهِ وَقَالَ خِيَارُكُمْ أَحَاسِنُكُمْ قَضَاءً قَالَ وَفِي الْبَابِ عَنْ أَبِي رَافِعٍ  

"A man behaved in a rude manner while trying to collect a debt from the Messenger of Allah ﷺ. So his Companions were about to harm him. The Messenger of Allah ﷺ said: 'Leave him, for indeed the owner of the the right has the right to speak.' Then he said: 'Purchase a camel for him and give it to him.' So they searched out but they did not find a camel but of a better ager than his camel. So he said: 'Buy it and give it to him. For indeed the best of you is the best in repaying.'"  

أَنَّ رَجُلاً تَقَاضَى رَسُولَ اللَّهِ ﷺ فَأَغْلَظَ لَهُ فَهَمَّ بِهِ أَصْحَابُهُ فَقَالَ رَسُولُ اللَّهِ ﷺ دَعُوهُ فَإِنَّ لِصَاحِبِ الْحَقِّ مَقَالاً ثُمَّ قَالَ اشْتَرُوا لَهُ بَعِيرًا فَأَعْطُوهُ إِيَّاهُ فَطَلَبُوهُ فَلَمْ يَجِدُوا إِلاَّ سِنًّا أَفْضَلَ مِنْ سِنِّهِ فَقَالَ اشْتَرُوهُ فَأَعْطُوهُ إِيَّاهُ فَإِنَّ خَيْرَكُمْ أَحْسَنُكُمْ قَضَاءً  

] This Hadith is Hasan Sahih.  

"The Messenger of Allah got a camel in advance. Some camels from the charity." Abu Rafi' said: "So the Messenger of Allah ﷺ told me to pay the man back for his camel. I said: 'I did not find among the camels but a superior selection of Raba'. The Messenger of Allah ﷺ said: 'Give it to him, for indeed the base of people is the best of them in repaying.'"  

عَنْ أَبِي رَافِعٍ مَوْلَى رَسُولِ اللَّهِ ﷺ قَالَ اسْتَسْلَفَ رَسُولُ اللَّهِ ﷺ بَكْرًا فَجَاءَتْهُ إِبِلٌ مِنَ الصَّدَقَةِ قَالَ أَبُو رَافِعٍ فَأَمَرَنِي رَسُولُ اللَّهِ ﷺ أَنْ أَقْضِيَ الرَّجُلَ بَكْرَهُ فَقُلْتُ لاَ أَجِدُ فِي الإِبِلِ إِلاَّ جَمَلاً خِيَارًا رَبَاعِيًّا فَقَالَ رَسُولُ اللَّهِ ﷺ أَعْطِهِ إِيَّاهُ فَإِنَّ خِيَارَ النَّاسِ أَحْسَنُهُمْ قَضَاءً