Sahih al-Bukhari 318

Arabic

حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ عُبَيْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ إِنَّ اللَّهَ ـ عَزَّ وَجَلَّ ـ وَكَّلَ بِالرَّحِمِ مَلَكًا يَقُولُ يَا رَبِّ نُطْفَةٌ، يَا رَبِّ عَلَقَةٌ، يَا رَبِّ مُضْغَةٌ‏.‏ فَإِذَا أَرَادَ أَنْ يَقْضِيَ خَلْقَهُ قَالَ أَذَكَرٌ أَمْ أُنْثَى شَقِيٌّ أَمْ سَعِيدٌ فَمَا الرِّزْقُ وَالأَجَلُ فَيُكْتَبُ فِي بَطْنِ أُمِّهِ ‏"‏‏.‏

English translation

Narrated Anas bin Malik:The Prophet (ﷺ) said, "At every womb Allah appoints an angel who says, 'O Lord! A drop of semen, O Lord! A clot. O Lord! A little lump of flesh." Then if Allah wishes (to complete) its creation, the angel asks, (O Lord!) Will it be a male or female, a wretched or a blessed, and how much will his provision be? And what will his age be?' So all that is written while the child is still in the mother's womb

Reference: Sahih al-Bukhari 318, Book of Menstrual Periods. English translation by Dr. Muhammad Muhsin Khan.