The Gemara asks, according to Tana D’vei Rabi Yishmael why not include all materials for tzitzis from the passuk ‘asher techaseh bah’; but then how will we understand the fact that the Torah twice stated the words ‘wool and linen’ (by Negga) since there will be nothing that we are excluding?
Shabbos 27 – שבת כז
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