Al-Matalib al-'Aliyah 3331 — Sending blessings upon the Prophet ﷺ

It is narrated from Sayyiduna Buraydah al-Khuza'i (may Allah be pleased with him) that we said: "O Messenger of Allah, we have come to know how to send salam (greetings of peace) upon you, but how should we send salah (blessings) upon you?" He (peace and blessings be upon him) said: "Say: 'Allahumma ij'al salawatika wa rahmataka ala Muhammadin wa ala ali Muhammadin kama ja'altaha ala ali Ibrahima innaka Hamidun Majid' (O Allah, send down Your special blessings and Your mercy upon Muhammad ((peace and blessings be upon him)) and upon the family of Muhammad ((peace and blessings be upon him)), just as You sent them down upon the family of Ibrahim (peace be upon him); indeed You are Most Praiseworthy, Most Glorious)."
Imam Ahmad bin Mani' recorded this hadith; however, its chain contains the narrator Abu Dawud al-A'ma (Nafi' bin al-Harith), who is severely da'if (weak) and matruk al-hadith (abandoned in hadith) according to the majority of hadith scholars.