Parashas Bo · Passuk 12:8
Chabad.org — English translation + Rashi
Torah Temimah points to Pesachim 41b (verified).
Sefaria — Exodus 12:8
Sefaria — Pesachim 41b
E-Daf — Pesachim 41b
English: One who eats an olive’s bulk of roast while it is still day violates a positive commandment, as it is said, “they shall eat the meat on this night” — at night and not by day.
On the daf / in context: See the cited source for the full section.
Derash on the verse (Pesachim 41b) — not a formal named middah of the 13.
Eating the roasted Pesach by day violates the positive command of night eating.