Whenever Allah's Messenger (ﷺ) finished his `Asr prayer, he would enter upon his wives and stay with one of them. One day he went to Hafsa and stayed with her longer than usual.
Sahih al-Bukhari Book 67, Hadith 149
← Previous Hadith The Prophet (ﷺ) used to pass by (have sexual relation with) all his wives in one night, and at that time he had nine wives.

Sahih al-Bukhari Book 67, Hadith 148 Next Hadith → that during his fatal ailment, Allah's Messenger (ﷺ), used to ask his wives, "Where shall I stay tomorrow? Where shall I stay tomorrow?" He was looking forward to Aisha's turn. So all his wives allowed him to stay where he wished, and he stayed at `Aisha's house till he died there. `Aisha added: He died on the day of my usual turn at my house. Allah took him unto Him while his head was between my chest and my neck and his saliva was mixed with my saliva.

Sahih al-Bukhari Book 67, Hadith 150