Sayyidah Aishah (may Allah be pleased with her) narrated that the Prophet (peace and blessings be upon him) said: "When anyone vomits, regurgitates fluid or has a nosebleed during prayer, let him perform ablution, then build on the prayer he has already offered, as long as he has not spoken."
(b) Sayyidah Aishah (may Allah be pleased with her) narrated that the Prophet (peace and blessings be upon him) said: "Whoever vomits or has a nosebleed" and he mentioned the rest of the hadith.
Ibn Adi (may Allah have mercy on him) said: Ibn Ayyash narrated this hadith once in this way and once through Ibn Jurayj, from his father, from Aishah, and neither is preserved. Imam Ahmad bin Hanbal (may Allah have mercy on him) said: What Isma'il bin Ayyash narrates from the people of Syria is sound, and what he narrates from the people of Hijaz is not sound; Ibn Jurayj narrated this hadith only from his father, without a connected chain, and there is no mention of Aishah in it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 669