وَعَنْهُ أَيْضًا قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ ((إِنَّ النُّطْفَةَ تَكُونُ فِي الرَّحِمِ أَرْبَعِينَ يَوْمًا عَلَى حَالِهَا لَا تَتَغَيَّرُ فَإِذَا مَضَتِ الْأَرْبَعُونَ صَارَتْ عَلَقَةً ثُمَّ مُضْغَةً كَذَلِكَ ثُمَّ عِظَامًا كَذَلِكَ فَإِذَا أَرَادَ اللَّهُ أَنْ يُسَوِّيَ خَلْقَهُ بَعَثَ إِلَيْهَا مَلَكًا فَيَقُولُ الْمَلَكُ الَّذِي يَلِيهِ أَيْ رَبِّ أَذَكَرٌ أَمْ أُنْثَى أَشَقِيٌّ أَمْ سَعِيدٌ أَقَصِيرٌ أَمْ طَوِيلٌ أَنَاقِصٌ أَمْ زَائِدٌ قُوتُهُ وَأَجَلُهُ أَصَحِيحٌ أَمْ سَقِيمٌ قَالَ فَيُكْتَبُ ذَلِكَ كُلُّهُ)) فَقَالَ رَجُلٌ مِنَ الْقَوْمِ فَفِيمَ الْعَمَلُ إِذًا وَقَدْ فَزِعَ مِنْ هَذَا كُلِّهِ قَالَ ((اعْمَلُوا فَكُلٌّ سَيُوَجَّهُ لِمَا خُلِقَ لَهُ))
Sayyiduna Abdullah (may Allah be pleased with him) also narrates that the Messenger of Allah (peace and blessings be upon him) said: Surely, the sperm remains in its state for forty days, there is no change in it. When forty days pass, it becomes a clot of congealed blood. Then after forty days, it becomes a lump of flesh. Then after forty days, bones are formed. So when Allah Almighty intends to complete its creation, He sends an angel towards it. The angel responsible for this task says: O my Lord! Is it male or female? Fortunate or unfortunate? Short in stature or tall? Deficient in creation or excessive in creation? Also, its sustenance and death? And is it healthy or sick? So all these things are written down. One of the people said: If all this matter has already been decided, then what is the point of action? The Prophet (peace and blessings be upon him) said: You should act, for every person will be directed towards that for which he was created.