Reference for Menachot 70:4

אמר רב פפא גרדומי רצועות כשירות ולאו מילתא היא מדאמרי בני רבי חייא גרדומי תכלת וגרדומי אזוב כשירין התם הוא דתשמישי מצוה נינהו אבל הכא דתשמישי קדושה נינהו לא

But this is not correct; for since R'Hiyya's sons stated, Curtailed blue threads<span class="x" onmousemove="('comment',' Of the zizith, v. infra 38b.');">⁵</span> are valid, and curtailed hyssop twigs<span class="x" onmousemove="('comment',' Used in the purification rites of a leper; cf. Lev. XIV, 4.');">⁶</span> are valid, it is clear that only there [are th valid] since they are only accessories of precepts, but it is not so here, as [the straps] are accessories of ho things.<span class="x" onmousemove="('comment',' The accessories of holy things are of a higher sanctity and are treated with greater stringency than the accessories of precepts; v. Meg. 26b.');">⁷</span>

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