Bahz bin Hakim narrated from his father, that his grandfather said:
I said: 'O Prophet of Allah, I did not come to you until I had sworn more than this many times the number of fingers on his hands that I would never come to you or follow your religion. I am a man who does not know anything except that which Allah, the Mighty and Sublime, and His Messenger teach me. I ask you by the Revelation of Allah, with what has your Lord sent your to us? He said: With Islam.' I said: 'What are the signs of Islam?' He said: 'To say, I submit my face to Allah and give up Shirk, and to establish the Salah and to pay the Zakah. '