GEN727 It was taught: “Ben Assai said: ‘If one does not fulfill the
mitzvah of begetting children, it is as if he spills blood and diminishes God’s image, as it is written: ‘One who spills the blood of a man in a man, his blood shall be spilled, for in the image of God He made man,’ after which it is written: ‘And you, be fruitful and multiple”
Yevamot 63b. TEMIMAH-GEN 48
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