Sahih Bukhari

Narrated Abu Humaid As-Sa`idi:The people asked, ""O Allah's Messenger (ﷺ)! How shall we (ask Allah to) send blessings on you?"" Allah's Apostle replied, ""Say: O Allah! Send Your Mercy on Muhammad and on his wives and on his offspring, as You sent Your Mercy on Abraham's family; and send Your Blessings on Muhammad and on his offspring, as You sent Your Blessings on Abraham's family, for You are the Most Praiseworthy, the Most Glorious