Parashas Acharei Mos · Passuk 16:02
Chabad.org — English translation + Rashi
Torah Temima points to Menachos 27b.
E-Daf.com — Menachos 27b (size=3)
HebrewBooks / Shas PDF
English: “To the Kodesh” under the laav of “he shall not come”; “from within the paroches and before the kapores” under the death penalty of “he shall not die.”
Laav vs death-penalty zones
Entry into the Heichal is a negative commandment; penetration beyond the paroches incurs death.