Sunan Abi Dawud — The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj) — Hadith No: 1780
Translation
The aforesaid tradition has also been narrated by Abu al-Aswad through a different chain of narrators. This version adds he who raises his voice in talbiyah for `Umrah (and wearing Ihram for it) should put off Ihram after performing `Umrah