It is narrated from Sayyiduna Ali (may Allah be pleased with him) that when the first ten verses of Surah Bara’ah were revealed, the Prophet (peace and blessings be upon him) called Sayyiduna Abu Bakr Siddiq (may Allah be pleased with him) and sent him to the people of Makkah so that he could recite it to them. After he had left, the Prophet (peace and blessings be upon him) called me and said:“Go after Sayyiduna Abu Bakr Siddiq (may Allah be pleased with him), wherever you find him, take that letter from him and you go to the people of Makkah and recite that letter to them.”So I caught up with him at the place of Juhfah and received that letter from him. When Sayyiduna Abu Bakr Siddiq (may Allah be pleased with him) returned to the Prophet (peace and blessings be upon him), he said: O Messenger of Allah! Has any command been revealed regarding me? He replied:“No! The real matter is that Jibreel (peace be upon him) came to me and said that this message should be delivered by you yourself or by a member of your family, (therefore, I was compelled to assign Sayyiduna Ali (may Allah be pleased with him) to this service).”