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.