Musnad Ahmad 1011:1

Abdullah narrated to us, Muhammad ibn Abi Bakr al-Muqaddami narrated to me, Bishr ibn al-Mufaddal narrated to us, from Dawud ibn Abi Hind, from Abdullah ibn Qays, from al-Harith ibn Uqaysh, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There are no two Muslims whose four children die, except that Allah will cause them both to enter Paradise." They said: "O Messenger of Allah, and three?" He said: "And three." They said: "O Messenger of Allah, and two?" He said: "And two. And indeed, there is among my nation one who will be magnified for the Fire until he becomes one of its corners, and indeed, there is among my nation one who will enter Paradise through his intercession [a number of people] more than [the tribe of] Mudar."