The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 1634

'Abdullah b. 'Umar reported: A man stood up and said. Messenger of Allah, how is the night prayer? The Messenger of Allah (may peace be upon him) said: The night prayer consists of pair, but if you apprehend the rise of dawn, make it odd number by observing one rak'ah.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star