Sayyiduna al-Harith bin Uqaysh al-Ukli (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "A man of my Ummah will enter Paradise and will intercede for more people than the tribe of Mudar; and a man of my Ummah will grow so large for Hell that he will be the size of one of its corners. And any Muslim husband and wife who send ahead four of their children, Allah will admit them into Paradise by His grace and mercy." The Companions said: Or three? He (peace and blessings be upon him) said: "Or three." They said: Or two? He (peace and blessings be upon him) said: "Or two."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3348