緇門警訓 3.42

3.42

鈔又引央掘經。繒綿皮物若展轉來離殺者手。施持戒人。不應受者是比丘法。若受者非悲不破戒。涅槃云。皮革履屣憍奢耶衣。如是衣服悉皆不畜。是正經律。今有一方禪眾。皆著艾布。豈非順教。

The Commentary also cites the Aṅgulimāla-sūtra: "If silk, floss, or leather items come indirectly, freed from the hands of the killer, and are given as an offering to a precept-keeper, they should not be accepted—this is the dharma of a bhikṣu. If one accepts them, it is not compassionate, though it does not break the precepts." The Nirvāṇa[-sūtra] states: "Leather boots and shoes, and kauśeya garments—all such clothing must not be kept. This is the orthodox scripture and vinaya." Today there is a region where the Chan community all wear mugwort-cloth. How could that not accord with the teaching?