Sunan Ibn Majah 2285
It was narrated from Abu Rafi' that:
the Prophet (ﷺ) asked a man to give as a loan a young camel and said: “When the camels of the Sadaqah come, we will pay you back.” When the camels came, he said: " O Abu Rafi', pay this man back for his Young camel." But all I could find was a seven-year-old camel or that which is better. I told the Prophet  (ﷺ) and he said: "Give it to him, for the best of People are those who are best in repaying."
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا مُسْلِمُ بْنُ خَالِدٍ، حَدَّثَنَا زَيْدُ بْنُ أَسْلَمَ، عَنْ عَطَاءِ بْنِ يَسَارٍ، عَنْ أَبِي رَافِعٍ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ اسْتَسْلَفَ مِنْ رَجُلٍ بَكْرًا وَقَالَ ‏"‏ إِذَا جَاءَتْ إِبِلُ الصَّدَقَةِ قَضَيْنَاكَ ‏"‏ ‏.‏ فَلَمَّا قَدِمَتْ قَالَ ‏"‏ يَا أَبَا رَافِعٍ اقْضِ هَذَا الرَّجُلَ بَكْرَهُ ‏"‏ ‏.‏ فَلَمْ أَجِدْ إِلاَّ رَبَاعِيًا فَصَاعِدًا فَأَخْبَرْتُ النَّبِيَّ ـ صلى الله عليه وسلم ـ فَقَالَ ‏"‏ أَعْطِهِ فَإِنَّ خَيْرَ النَّاسِ أَحْسَنُهُمْ قَضَاءً ‏"‏ ‏.‏