Liturgy for Niddah 122:6

בגד שאבד בו כלאים הרי זה לא ימכרנו לעובד כוכבים ולא יעשנו מרדעת לחמור

was lost<span class="x" onmousemove="('comment',' Sc. it was known that a thread of wool had been woven into a garment of flax or a thread of flax into a garment of wool but the thread could not be traced so as to be extracted. ');">⁵</span>

Seder Ma'amadot