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כל צפור טהרה תאכלו. לְהַתִּיר מְשֻׁלַּחַת שֶׁבַּמְּצֹרָע (ספרי; קידושין נ"ז): כל צפור טהרה תאכלו ALL CLEAN BIRDS YOU MAY EAT — 'All' — this is intended to permit as food also the bird that is set free in the case of a leper (i.e. at his purification rite; Leviticus 14:7) (Sifrei Devarim 103:1; Kiddushin 57a).