Sayyiduna Husayn bin Ali (may Allah be pleased with him) says that Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) told him that the Messenger of Allah (peace and blessings be upon him) came to him and to his daughter Sayyidah Fatimah (may Allah be pleased with her) at night and said: "Do you two not pray at night?" I said: O Messenger of Allah! Our souls are in the hand of Allah; when He wishes to wake us, He wakes us. When I replied, he (peace and blessings be upon him) went away without giving any reply, and as he was turning away I heard him (peace and blessings be upon him) saying, while striking his hand on his thigh: "'And man is, more than anything, given to dispute' [Surah al-Kahf: 54]."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4641