Parashas Bo · Shemos 12:8 · TT note 9
Torah Temimah on Shemos 12:8, note 9 (on וּמַצּוֹת עַל מְרֹרִים יֹאכְלֻהוּ) points to Mechilta.
Sefaria — Exodus 12:8
Sefaria — Torah Temimah on Exodus 12:8
Sefaria — Mechilta
English: This teaches that the Pesach is eaten when one is satisfied, and matzah and maror are not eaten when one is already satisfied.
Order-of-eating derash: matzah and maror first; Pesach last, on a full stomach.
The Pesach is eaten last, when one is already full; matzah and maror are not deferred until satiety.