Musannaf Ibn Abi Shayba 3:3539

Abu Bakr narrated to us, he said: Asbat bin Muhammad narrated to us, from Sa’id, from Qatadah, from Khallas, regarding: A man who is afflicted by vomiting or a nosebleed during prayer. He said: He should turn away and perform ablution, then resume his prayer from where he left off, as long as he has not spoken.