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.
حَدَّثَنَا ابْنُ السَّرْحِ، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي مَالِكٌ، عَنْ أَبِي الأَسْوَدِ، بِإِسْنَادِهِ مِثْلَهُ زَادَ فَأَمَّا مَنْ أَهَلَّ بِعُمْرَةٍ فَأَحَلَّ .
AbuDaud
The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj) • Hadith 1780