Sahih al-Bukhari 1067

Muhammad ibn Bashshar narrated to us; he said: Ghundar narrated to us; he said: Shu‘bah narrated to us, from Abu Ishaq, who said: I heard al-Aswad, from ‘Abd Allah (may Allah be pleased with him), who said: The Prophet (peace and blessings be upon him) recited Surat al-Najm in Makkah and prostrated during it, and those with him prostrated as well, except for an old man who took a handful of pebbles or soil, lifted it to his forehead, and said: ‘This is enough for me.’ I saw him later, killed as an unbeliever.