Legal Stringencies for Torah Scholars [talmidei chachamim]
Note: This file lists stringencies practiced by Torah scholars as a class, not by particular Torah scholars. Practices of particular sages may be found under the listings of those sages - for Tannaim here and for Amoraim here.
Not Working on The 9th of Av: Berachot 17b, Pesachim 54b