Musannaf Ibn Abi Shaybah 11716 — What is begun with at the first

Al-Ala' bin al-Musayyib narrates from his father that when Sayyiduna Ali (may Allah be pleased with him) offered the funeral prayer, he would begin with the praise of Allah, then send blessings (durood) upon the Prophet, and then recite this supplication: 'Allahumma ighfir li-ahya'ina wa amwatina, wa allif bayna qulubina, wa aslih dhata baynina, waj'al qulubana 'ala qulubi khiyarina' (O Allah, forgive our living and our dead, bring our hearts together, set right the relations between us, and make our hearts like the hearts of the best of us).