Wishing a Gut Shabbos
TefillahShabbos & Yom TovTorah learning
Some of Rav Yechezkel's students once met him climbing the stairs to the yeshiva's study hall on Shabbos night, having arrived only after davening was over. They wondered why Rav Yechezkel was hurrying when Ma'ariv was already finished. He explained, “Ma'ariv is miderabonon, while wishing a gut Shabbos is de'Oraisa.”