It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that a person asked the Prophet (peace and blessings of Allah be upon him) about 'azl (withdrawal before ejaculation). The Prophet (peace and blessings of Allah be upon him) said, "Do you do that?" The people replied, "Yes!" The Prophet (peace and blessings of Allah be upon him) said, "If you do not do that, there is no harm upon you. The soul whom Allah Almighty has decided to bring into existence will surely come into existence."