Uthman prayed four rak'ahs (at Mina) for he made it his home (for settlement).
Sunan Abi Dawud Book 11, Hadith 242
← Previous Hadith Uthman prayed four rak'ahs at Mina because he resolved to stay there after hajj.

Sunan Abi Dawud Book 11, Hadith 241 Next Hadith → When Uthman placed his property at at-Ta'if and intended to settle there, he prayed four rak'ahs. The rulers after him followed the same practice.

Sunan Abi Dawud Book 11, Hadith 243