Sahih Muslim | Book 33 | Hadith Number 6392
Narrated by Hudhaifa b. Usaid
Hudhaifa b. Usaid reported directly from Allah's Messenger (may peace be upon him) that lie said: When the drop of (semen) remains in the womb for forty or fifty (days) or forty nights, the angel comes and says: My Lord, will he be good or evil? And both these things would be written. Then the angel says: My Lord, would he be male or female? And both these things are written. And his deeds and actions, his death, his livelihood; these are also recorded. Then his document of destiny is rolled and there is no, addition to and subtraction from it.