BT RH 4b(10) :כי מכדי מניהו סליק מאי שנא הדר כתב רחמנא חג המצות‏ : since it is the case that it has already finished discussing them, what was changed that the Merciful One again wrote "festival of maṣṣot?"
See the entire entry for ky@mykdy conj., adv surely, it being the case that