BT BM 111a(26) :הני דאיכא ביממא ליכא בליליא דאיכא בליליא ליכא ביממא‏ : these (verses) which are (applicable) in the by day are not (applicable) at night. Those (verses) which are (applicable) at night are not (applicable) in the by day
See the entire entry for lykˀ adv. there isn't here