سنن النسائي

It was narrated from Safwan bin Umayyah that: a Khamisah was stolen from beneath his head while he slept in the Masjid of the Prophet. He caught there thief and brought him to the Prophet, who ordered that his hand be cut off. Safwan said: "Are you going to cut off his hand?" He said "Why didn't you let him go before you b brought him to me?" (Daif)