It was narrated that Sulaiman bin Yasar said: “I entered upon Umm Salamah and she told me that the Messenger of Allah ﷺ used to wake up in a state of Janabah without having had a wet dream, then he would fast.” And she told him that she brought the Prophet ﷺ some grilled ribs and he ate from that, then he got up and prayed, and did not perform Wudu’. (Sahih)