(1) باب التَّطَوُّعِ وَرَكَعَاتِ السُّنَّةِ
Narrated Abd Allah b. 'Umar:
The Messenger of Allah (ﷺ) would pray two rak'ahs before and two after the noon prayer, two after the sunset prayer in his house, and two after the night prayer. He would not pray after the Friday prayer till he departed. He would then pray two rak'ahs.
Reference: Sunan Abi Dawud 1252
In-book reference: Book 5, Hadith 3
English translation: Book 5, Hadith 1247