Sunan an-Nasa'i 1291

‘Ubayd Allah ibn Sa‘d ibn Ibrahim ibn Sa‘d informed us: My uncle narrated to us: Sharik narrated to us, from ‘Uthman ibn Mawhab, from Musa ibn Talhah, from his father, that a man came to the Prophet of Allah (ﷺ) and said, “O Prophet of Allah, how should we invoke blessings upon you?” He said: “Say: ‘O Allah, send blessings upon Muhammad and the family of Muhammad, as You sent blessings upon Ibrahim. You are indeed Praiseworthy, Glorious. And bless Muhammad and the family of Muhammad, as You blessed Ibrahim. You are indeed Praiseworthy, Glorious.’”