Abu Huraira reported God’s messenger as saying, “Everyone is born a Muslim, but his parents make him a Jew, a Christian, or a Magian; just as a beast is born whole. Do you find some among them [born] maimed?” Then he was saying, “God’s pattern on which He formed mankind. There is no alteration of God’s creation. That is the true religion.” (Bukhari and Muslim.)
Hadith Referenceمشكوة المصابيح / كتاب الإيمان / 90
Hadith Gradingالألبانی:متفق عليه | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (1358) و مسلم (22 / 2658)»