Abdur Rahman bin Abi Laila narrates: Sayyiduna Ka'b bin Ujrah (may Allah be pleased with him) said to me: Shall I not give you a gift? The Prophet (peace and blessings of Allah be upon him) came to us and we said: O Messenger of Allah! We have learned how to send peace upon you, so how should we send blessings upon you? The Prophet (peace and blessings of Allah be upon him) said: Say this: O Allah! Send blessings upon Muhammad (peace and blessings of Allah be upon him) and upon the family of Muhammad (peace and blessings of Allah be upon him) as You sent blessings upon the family of Ibrahim (peace be upon him). Indeed, You are Praiseworthy and Glorious. O Allah! Send blessings upon Muhammad (peace and blessings of Allah be upon him) and upon the family of Muhammad (peace and blessings of Allah be upon him) as You sent blessings upon the family of Ibrahim (peace be upon him). Indeed, You are Praiseworthy and Glorious.
Hadith Referenceصحیح ابن حبان / كتاب الرقائق / 912
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «فضل الصلاة على النبي» (56): ق.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الشيخين.