By Nafs, and Ma Sawwaha (Who apportioned it).
meaning, He created it sound and well-proportioned upon the correct nature (Al-Fitrah).
This is as Allah says,
فَأَقِمْ وَجْهَكَ لِلدِّينِ حَنِيفاً فِطْرَةَ اللَّهِ الَّتِى فَطَرَ النَّاسَ عَلَيْهَا لَا تَبْدِيلَ لِخَلْقِ اللَّهِ
So set you your face towards the religion, Hanif. Allah's Fitrah with which He has created mankind. No change let there be in the Khalqillah. (30;30)
The Messenger of Allah said,
كُلُّ مَوْلُودٍ يُولَدُ عَلى الْفِطْرَةِ فَأَبَوَاهُ يُهَوِّدَانِهِ أَوْ يُنَصِّرَانِهِ أَوْ يُمَجِّسَانِهِ
كَمَا تُولَدُ الْبَهِيمَةُ بَهِيمَةً جَمْعَاءَ هَلْ تُحِسُّونَ فِيهَا مِنْ جَدْعَاءَ
Every child that is born, is born upon the Fitrah, but his parents make him a Jew, a Christian, or a Zoroastrian.
This is just as the animal is born, complete with all of its parts. Do you notice any mutilation in it?
Both Al-Bukhari and Muslim recorded this Hadith from Abu Hurayrah.
In Sahih Muslim, it has been narrated from `Iyad bin Himar Al-Mujashi`i that the Messenger of Allah said,
يَقُولُ اللهُ عَزَّ وَجَلَّ
إِنِّي خَلَقْتُ عِبَادِي حُنَفَاءَ فَجَاءَتْهُمُ الشَّيَاطِينُ فَاجْتَالَتْهُمْ عَنْ دِينِهِم
Allah the Mighty and Majestic says,
"Verily I created My servants Hunafa' (as monotheists), but then the devils came to them and distracted them from their religion."
Then Allah says,
فَأَلْهَمَهَا فُجُورَهَا وَتَقْوَاهَا