EXTRA · Parashas Reeh · Fourth Aliyah · Passuk 14:10
Supplementary classical material for a passuk with no Torah Temimah citation.
But anything that does not have fins and scales you shall not eat; it is unclean for you.
Classical source: Niddah 51b.
English: “Anything that does not have fins and scales you shall not eat” — if so, why does Scripture mention fins? In order to increase and magnify the Torah.
Derash on the apparent redundancy (Niddah) — the second sign is retained to enlarge Torah.
Even when one sign would have sufficed, the Torah states both so that Torah itself is increased and made great.