Sahih Bukhari

Narrated Abu Humaid As-Saidi:The people said, ""O Allah's Messenger (ﷺ) ! How may we send Salat on you?"" He said, ""Say: Allahumma Salli 'ala- Muhammadin wa azwajihi wa dhurriyyatihi kama sal-laita 'ala `Ali Ibrahim; wa barik 'ala Muhammadin wa azwajihi wa dhurriyyatihi kamabarakta 'ala `Ali Ibrahim innaka hamidun majid