Muwatta Malik #1449
Business Transactions
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَحَدَّثَنِي مَالِكٌ، عَنِ ابْنِ شِهَابٍ، أَنَّهُ سَأَلَهُ عَنِ الرَّجُلِ، يَتَكَارَى الدَّابَّةَ ثُمَّ يُكْرِيهَا بِأَكْثَرَ مِمَّا تَكَارَاهَا بِهِ فَقَالَ لاَ بَأْسَ بِذَلِكَ .
Malik related to me that he asked Ibn Shihab about a man who
hired an animal, and then re-hired it out for more than what he hired
it for. He said, "There is no harm in that."
About Muwatta Malik
This hadith is #1449 from Muwatta Malik, in the Book of Business Transactions.