The Nit’ei Gavriel on the laws of Bein Hametzarim, 5747 New York p. 87 footnote 30 quotes Rabbi David Sperber’s responsa “Afarkasta De’anya” 154:3 who claims the Ruzhiner Rebbe instructed (ציוה) his Chassidim to complete Mishnayos and make a siyum during the week of Tish’a Be’av in order to eat meat. He then cites Shut “Beis Avi” II chapter 52 saying he has witnessed good and worthy Jews, who don’t crave meat, and generally avoid prohibitions do so, as well.
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Reviving a Dead Religion Once Known as ‘Judaism’
