He told of a man who came to the Prophet and said, “So and so prays at night, and when morning comes he steals.” He replied, “What you say will restrain him.”
Ahmad and Baihaqi, in Shu'ab al-iman, transmitted it.
Abu Sa'id and Abu Huraira reported God’s Messenger as saying, “When a man wakens his wife* during the night and they pray (or he prays) two rak'as together, they are recorded among the men and women who make mention of God.”
* The Arabic word is ahl which means “people” or “family”, and sometimes "wife. As the dual is used about them praying together, it obviously means “wife” here; but in Ibn ‘Umar’s tradition below the plural is used, and so the word is there translated “family”.
Narrated ‘Uthman b. Abul ‘As said he heard God’s Messenger say:
David had an hour during the night in which he would waken his family and say, “Family of David, get up and pray, for this is an hour in which God who is great and glorious answers petitions, except to a magician or a tax-gatherer.”