Can one say l'shem mitzvas tiztzis in a bathroom? I was thinking of a case of tying the knots or fixing it. Since tiztzis is not a davar shebikedusha maybe it should be fine, or maybe since its mitzva ...
What is the "tying" referred to in תוס‘ ד"ה ואידך הני שכיחן in Chullin 9a, in which Rebbeinu Tam seems to hold that tying teffilin every day is not obligatory? (It is not referring to putting on ...