Liturgy for Bava Kamma 238:3

ולא יסרוק הבגד לשתיו אלא לערבו והתניא איפכא לא קשיא הא בגלימא הא בסרבלא:

The Master stated: 'Two threads.' But did we not learn, THREE'? — There is no difficulty, as the former statement applies to thick threads and the latter to thin ones.

Hadran