A man came to the Prophet and said: I have found a woman of rank and beauty, but she does not give birth to children. Should I marry her? He said: No. He came again to him, but he prohibited him. He came to him third time, and he (the Prophet) said: Marry women who are loving and very prolific, for I shall outnumber the peoples by you.

Narrated Ma'qil ibn Yasar, in AbuDawud, Book 11, Number 2045 - Sunni Hadith