Musnad Abi Ya'la 5267 — he said: When you send blessings

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: "When you send blessings upon the Messenger of Allah (peace and blessings be upon him), send blessings in the most excellent and beautiful manner, for you do not know; perhaps they are presented before him (peace and blessings be upon him)." The people said: "O Abu Abd al-Rahman, teach us that way." He said: "Say: 'Allahumma ij'al salawatika wa rahmataka wa barakatika 'ala sayyid al-mursalin, wa imam al-muttaqin, wa khatam al-nabiyyin Muhammadin 'abdika wa rasulika, imam al-khayri wa qa'id al-khayri wa rasul al-rahmah. Allahumma ib'athhu maqaman mahmudan yaghbituhu bihi al-awwaluna wal-akhirun. Allahumma salli 'ala Muhammadin wa 'ala ali Muhammadin kama sallayta 'ala Ibrahima wa 'ala ali Ibrahima innaka Hamidun Majid, wa barik 'ala Muhammadin wa 'ala ali Muhammadin kama barakta 'ala Ibrahima wa 'ala ali Ibrahima innaka Hamidun Majid' (O Allah, send Your special blessings, mercy and favours upon the leader of the Messengers, the imam of the pious and the Seal of the Prophets, Muhammad (peace and blessings be upon him), who is Your servant and Your Messenger, the leader of good, the guide to goodness and the Messenger of mercy. O Allah, raise him to the Praised Station (al-Maqam al-Mahmud) for which the first and the last will envy him. O Allah, send blessings upon Muhammad (peace and blessings be upon him) and the family of Muhammad (peace and blessings be upon him) as You sent blessings upon Ibrahim (peace be upon him) and the family of Ibrahim (peace be upon him); indeed You are Praiseworthy, Glorious. And send Your blessings (barakah) upon Muhammad (peace and blessings be upon him) and the family of Muhammad (peace and blessings be upon him) as You sent blessings upon Ibrahim (peace be upon him) and the family of Ibrahim (peace be upon him); indeed You are Praiseworthy, Glorious).'"