Ayesha reported,

We would prepare his toothstick and water for purification. Allah would rouse him at whatever hour of the night He willed, and he would brush his teeth, perform ablution, and pray nine units of prayer, sitting only in the eighth.

Azami 1366

Sahih

عن عائشة قالت

كنا نعد له سواكه وطهوره، فيبعثه الله ما شاء أن يبعثه من الليل، فيتسوك ويتوضأ ويصلي تسع ركعات لا يجلس إلا في الثامنة.

الأعظمي 1366صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Purification
Section
Siwak
Numbering
Jami al-Kamil 1366 (2nd edition)
Azami 1366