Sahih al-Bukhari 1359
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "Every child is born with a true faith of Islam (i.e. to worship none but Allah 
Alone) but his parents convert him to Judaism, Christianity or Magainism, as an animal delivers a 
perfect baby animal. Do you find it mutilated?" Then Abu Huraira recited the holy verses: "The pure 
Allah's Islamic nature (true faith of Islam) (i.e. worshipping none but Allah) with which He has 
created human beings. No change let there be in the religion of Allah (i.e. joining none in worship 
with Allah). That is the straight religion (Islam) but most of men know, not." (30.30)
حَدَّثَنَا عَبْدَانُ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا يُونُسُ، عَنِ الزُّهْرِيِّ، أَخْبَرَنِي أَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ، أَنَّ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَا مِنْ مَوْلُودٍ إِلاَّ يُولَدُ عَلَى الْفِطْرَةِ، فَأَبَوَاهُ يُهَوِّدَانِهِ أَوْ يُنَصِّرَانِهِ أَوْ يُمَجِّسَانِهِ، كَمَا تُنْتَجُ الْبَهِيمَةُ بَهِيمَةً جَمْعَاءَ، هَلْ تُحِسُّونَ فِيهَا مِنْ جَدْعَاءَ ‏"‏‏.‏ ثُمَّ يَقُولُ أَبُو هُرَيْرَةَ ـ رضى الله عنه ‏{‏فِطْرَةَ اللَّهِ الَّتِي فَطَرَ النَّاسَ عَلَيْهَا لاَ تَبْدِيلَ لِخَلْقِ اللَّهِ ذَلِكَ الدِّينُ الْقَيِّمُ‏}‏