Hadith 8:2223
Abu Bakr narrated to us, he said: Jarir narrated to us, from Mughira, from Ibrahim, regarding a man who reaches the time [of Hajj/Umrah] while he is in a state of unconsciousness: He said, "The Talbiyah is to be performed on his behalf."
حدثنا أبو بكر قال حدثنا جرير عن مغيرة عن إبراهيم في الرجل يبلغ الوقت وهو مغمى عليه قال يلبى عنه