What did the Prophet Muhammad (saw) do after reciting Surat-an-Najm?
      Narrated 'Abdullah:                          The Prophet recited Surat-an-Najm and then prostrated himself, and all     who were with him prostrated too. But an old man took a handful of      dust and touched his forehead with it saying, "This is sufficient for      me." Later on I saw him killed as an infidel.