Sahih Muslim | Book 25 | Hadith Number 5326

Narrated by Mughira b. Shu'ba
Mughira b. Shu'ba reported: When I came to Najran, they (the Christians of Najran) asked me: You read "O sister of Harun" (i.e. Hadrat Maryam) in the Qur'an, whereas Moses was born much before Jesus. When I came back to Allah's Messenger (may peace be upon him) I asked him about that, whereupon he said: The (people of the old age) used to give names (to their persons) after the names of Apostles and pious persons who had gone before them.