Sefer Toras Hatemarim quotes the Satmar Rov zy"a as relating that when he was young, he had a gabbai named R' Eliezer Roseman z"l, who had previously been the shamash of Rav Mordchele of Nadvorna zy"a. He would often tell the Rov divrei Torah that he had heard from Rav Mordchele.
On one occasion, he told him that Rav Mordchele had translated the words "tzohar ta'aseh l'teiva" in an unusual manner. He translated the word "tzohar" to mean "illumination", and the word "teiva" to be a reference to challah (as in Shemos 25:26, where this word is used to describe the lecham hapanim). He thus explained the pasuk to be saying that when a Yid makes challah for Shabbos, he is illuminating the day.