Hazrat Anas (may Allah be pleased with him) narrates that one day we were sitting in the mosque with the Messenger of Allah (peace and blessings be upon him) when a man riding a camel arrived. He made the camel sit in the mosque, dismounted, tied the she-camel with a rope, and then began to ask, "Who among you is Muhammad (peace and blessings be upon him)?" At that time, the Messenger of Allah (peace and blessings be upon him) was sitting in the middle, reclining on a cushion. We replied, "This fair-skinned man who is reclining on the cushion is Muhammad (peace and blessings be upon him)." That man turned towards the Prophet (peace and blessings be upon him) and said, "O son of Abdul Muttalib!" The Prophet (peace and blessings be upon him) replied, "Yes, I am listening (state your purpose)." The man said, "I want to ask you something, and I will be a bit harsh in questioning, so do not be angry with me." The Prophet (peace and blessings be upon him) said, "Ask whatever you wish." He said, "I ask you by the Lord of you and those before you, has Allah sent you as a Prophet for all people?" The Prophet (peace and blessings be upon him) replied, "Yes, by Allah! (He has sent me as a Prophet for all people.)" He said, "I ask you by Allah, has Allah commanded you to offer five prayers in the day and night?" The Prophet (peace and blessings be upon him) replied, "Yes, by Allah." He said, "I ask you by Allah, has Allah commanded you to fast in the month of Ramadan every year?" The Prophet (peace and blessings be upon him) replied, "Yes, by Allah." He said, "I ask you by Allah, has Allah commanded you to take zakat from our wealthy and distribute it among our poor?" The Prophet (peace and blessings be upon him) replied, "Yes, by Allah!" Upon hearing this, the man said, "I believe in everything you have brought (from Allah), and I am the representative of my people, and my name is Dhamam bin Tha’labah."