Musnad Ahmad 788:239

Yahya ibn Ishaq, meaning al-Salihini, narrated to us, saying: Hammad ibn Salamah informed us, from Abu Sinan, who said: I buried a son of mine, and I was in the grave when Abu Talhah took my hand and brought me out. He said: "Shall I not give you glad tidings?" I said: "Yes." He said: Al-Dahhak ibn Abd al-Rahman narrated to me, from Abu Musa al-Ash'ari, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: Allah the Exalted says: "O Angel of Death, have you taken the child of My servant? Have you taken the delight of his eye and the fruit of his heart?" He says: "Yes." He says: "And what did he say?" He says: "He praised You and said: 'To Allah we belong and to Him we shall return' (Inna lillahi wa inna ilayhi raji'un)." He says: "Build for him a house in Paradise, and name it the House of Praise (Bayt al-Hamd)."