It is narrated from Sayyidah Aishah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever has a nosebleed during his prayer should leave, perform ablution and then continue on the same prayer."
This hadith is one of the narrations of Isma'il bin Ayyash that were objected to; the preserved (mahfuz) version is the one the group narrated from Ibn Jurayj, from his father, from the Prophet (peace and blessings be upon him) as mursal. Sulayman bin Arqam is matruk (abandoned), and what Isma'il bin Ayyash narrates from other than the people of Syria is da'if (weak) and not relied upon. Abbad bin Kathir and Ata bin Ajlan are both da'if (weak).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3383