Abu Hurairah reported,

The Messenger of Allah ﷺ said, "Every human being is born by his mother upon the natural disposition, and afterward his parents make him a Jew, a Christian, or a Zoroastrian. If they are both Muslims, then he is a Muslim. Every human being whom his mother bears is poked by Satan in both his sides at birth, except Mary and her son."

Azami 1081

Sahih

عن أبي هريرة

أن رسول الله ﷺ قال: كل إنسان تلده أمه على الفطرة، وأبواه بعد يهودانه، وينصرانه، ويمجسانه، فإن كانا مسلمين فمسلم، كل إنسان تلده أمه يلكزه الشيطان في حضنيه إلا مريم وابنها.

الأعظمي 1081صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Belief in the divine decree and predestination
Section
Every child is born upon the fitrah
Numbering
Jami al-Kamil 1081 (2nd edition)
Azami 1081