Reference for Sanhedrin 148:1

אפילו לשנויי ערקתא דמסאנא

Even to change one's shoe strap.<span class="x" onmousemove="('comment',' When religion itself is persecuted even the most insignificant religious custom or habit must be defended at all costs, having regard to the higher principle at stake. [The shoe latchets worn by Jews were white, those worn by heathens black. v. Nacht. JQR, (N.S.) VI, p. 12.] ');">¹</span>

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