My father, passing someone on the street on שבת, says "גוט שבת, גוט שבת" (Yiddish, "good sabbath, good sabbath"): that is, he repeats himself. I thought it might be his own idio-custom — until I ...
Yesterday I said "shabbat shalom" to someone and he said we don't do that on Tisha b'Av that falls on Shabbat. I thought that Shabbat trumps the day (and that's why we move the other observances). ...