Parashas Bo · Passuk 12:20
Chabad.org — English translation + Rashi
Torah Temimah points to Pesachim 36b (verified).
Sefaria — Exodus 12:20English: “Bread of affliction” excludes challut and ashishah. One might think that only coarse bread qualifies, but “matzot” is repeated to include even refined matzah like Solomon’s. “Bread of affliction” nevertheless excludes challut and ashishah.
On the daf / in context: See the cited source for the full section.
Derash balancing the inclusive repetition “matzot” against the limitation expressed by “bread of affliction.”
Refined matzah can qualify, but specified forms characterized as challut or ashishah do not satisfy the requirement of “bread of affliction.”