Musannaf Ibn Abi Shaybah 8356 — Over what distance the prayer

Ata bin Abi Rabah said: I asked Sayyiduna Ibn Abbas (may Allah be pleased with them both): Should I shorten (the prayer) on a journey to Arafah? He said: No. I said: Should I shorten on a journey to Marr? He said: No. I said: Should I shorten on a journey to Ta'if and Usfan? He said: Yes, and that is forty-eight miles. And he counted it on his hand.