Musannaf Ibn Abi Shaybah 11697 — Reports on the funeral prayer

It is narrated from Abu Malik that when Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) led the funeral prayer, he would recite this supplication: 'Allahumma 'abduka aslamahu al-ahlu wal-malu wal-'ashirah, wal-dhanbu 'azim, wa anta al-Ghafur al-Rahim' (O Allah, Your servant: his family, wealth and kinsfolk have given him up, and the sin is great, and You are the Most Forgiving, the Most Merciful).