Why Are Achronim Filled With OBVIOUS Halachos? (Assuming We’re Still ‘Achronim’!)

Shevet Halevi on Hilchos Niddah p. 254 quotes Shut Beis Yitzchak (E.H. part 2 responsum 18) permitting one to hand a get to his wife, even if she’s a Niddah…

I didn’t see this within yet.