Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates from Sayyiduna Abu Talhah (may Allah be pleased with him) that he too was among those whom drowsiness overcame on that day. He said: Because of the overpowering drowsiness, the sword would fall from my hand and I would pick it up; then it would fall from my hand again and I would pick it up again.
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4683