It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: The Prophet (peace and blessings be upon him) would enter the morning in a state of major ritual impurity (janabah) without a wet dream, then he would take a ritual bath (ghusl) and continue his fast.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20223
Sayyidah Umm Salamah (may Allah be pleased with her) said: "I presented a roasted side (of meat) to the Messenger of Allah (peace and blessings be upon him). He ate from it, then stood up for the prayer and did not perform ablution (wudu)."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20224