Hadith 961:23
Bahz narrated to us, Shu'bah narrated to us, Qays ibn Muslim narrated to us, he said: I heard Abu Ramlah narrating from Ubayd Allah ibn Muslim, from Mu'adh ibn Jabal, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The one with three [children] has made it obligatory." Mu'adh said to him: "And the one with two?" He said: "And the one with two."
حدثنا بهز ، حدثنا شعبة، حدثنا قيس بن مسلم، قال: سمعت أبا رملة، يحدث عن عبيد الله بن مسلم، عن معاذ بن جبل، قال: قال رسول الله صلى الله عليه وسلم: " أوجب ذو الثلاثة " فقال له معاذ: وذو الاثنين؟ قال: " وذو الاثنين "