Jimmy Feterman asks:
How does the fact that HaShem said to Yaakov perei urvei instead of peru urvu answer our question of how we know that when the verse in 1:28 says peru urvu that only refers to the man?
Jimmy Feterman, Jerusalem, Israel
The Kollel replies:
Dear Jimmy,
Since it is written in singular, it is only for the man. The plural by Adam ha'Rishon is not a command to both man and woman, but a blessing to both (Tosfos DH v'Lo).
All the best,
Reuven Weiner