Hilchot Shabbat 10:9-10 (Sewing and Tearing on Shabbat)
10:22 am
Sewing two stitches on Shabbat is prohibited by Torah law; so why is there a difference in the halacha between sewing two stitches and three stitches? Tearing on Shabbat is also prohibited – but why? Isn’t it a destructive act?