Abdullah bin Abbas (may Allah be pleased with them both) narrates: On the night of the new moon of Ramadan, a man came and said: O Messenger of Allah! I have seen the new moon. The Prophet Muhammad (peace be upon him) said: "Do you bear witness that there is no deity except Allah and that Muhammad (peace be upon him) is the Messenger of Allah?" He replied: Yes! So the Prophet Muhammad (peace be upon him) announced: "You all should begin fasting." This narration has been transmitted by the narrator Shu’bah from Thawri as a mursal narration.