Abu Rafi' · The Book of Musaqah

I did not find among them but better camels above the age of six. He (the Holy Prophet) said: Give that to him for the best men are those who are best in paying off the debt.

Allah's Messenger (ﷺ) took as a loan (the rest of the hadith is the same), but with this variation that he (the Holy Prophet) said: Good amongst the servants of Allah is he who is best in paying off the debt.