四分比丘戒本疏 2.45

2.45

第十三、嫌罵僧羯磨差知事人，犯提也。准律，眼見耳不聞處毀者名嫌，聞而不見處毀者名罵，亦兩戒合制也。

Thirteenth, the precept against resenting or reviling an agent [of the saṃgha] appointed by a saṃgha-karma: one incurs a prāyaścittika. According to the vinaya, denigrating [the person] where one sees them with one's eyes but [they] do not hear with their ears is termed 'resenting'; denigrating where they hear but do not see is termed 'reviling'. This is also a joint formulation of two precepts.