Sahih Bukhari
Prophetic Commentary on the Quran (Tafseer of the Prophet (PBUH))
Volume: 006 / Book Number: 060 / Hadith Number: 85
Narrated Abu Talha:
Slumber overtook us during the battle of Uhud while we were in the front files. My sword would fall from my hand and I would pick it up, and again it would fall down and I would pick it up again.