Mishkat al-Masabih 2905
Abu Rafi‘said:
God’s Messenger borrowed a young camel, and when the camels of the sadaqa came to him he ordered me to pay the man his young camel. When I told him that I could find only an excellent camel in its seventh year he said, “Give it to him, for the best person is he who discharges his debt in the best manner." 

Muslim transmitted it.
وَعَن أبي رَافع قَالَ: اسْتَسْلَفَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بَكْرًا فَجَاءَتْهُ إِبِلٌ مِنَ الصَّدَقَةِ قَالَ: أَبُو رَافِعٍ فَأَمَرَنِي أَنْ أَقْضِيَ الرَّجُلَ بَكْرَهُ فَقُلْتُ: لَا أَجِدُ إِلَّا جَمَلًا خِيَارًا رَبَاعِيًا فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَعْطِهِ إِيَّاهُ فَإِنَّ خَيْرَ النَّاسِ أَحْسَنُهُمْ قَضَاءً» . رَوَاهُ مُسلم