Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
Bukhari :: Book 6 :: Volume 60 :: Hadith 248
Narrated 'Ali:
That one night Allah's Apostle came to him and Fatima and said, "Don't you (both offer the (Tahajjud) prayer?" Ali said, 'When Allah wishes us to get up, we get up." The Prophet then recited: 'But man is more quarrelsome than anything.' (18.54) (See Hadith No. 227,Vol. 2)