Sunan an-Nasa'i 1256

Muhammad ibn Rafi‘ reported to us; he said: Yahya ibn Adam narrated to me; he said: Mufaddal ibn Muhalhil reported to us, from al-Hasan ibn ‘Ubayd Allah, from Ibrahim ibn Suwayd, who said: ‘Alqamah prayed five rak‘ahs and was told so. He said: “I did not do that.” I nodded my head, “Yes, you did.” He said: “And you too, O one-eyed man?” I said: “Yes.” So he prostrated twice. Then he narrated to us from ‘Abd Allah, from the Prophet (ﷺ), that he prayed five rak‘ahs. The people whispered to one another and said to him: “Has something been added to the prayer?” He said: “No.” They informed him [that he had prayed five], so he folded his leg and prostrated twice. Then he said: “I am only a human being; I forget just as you forget.”