菩薩戒本疏 1.67

1.67

If a disciple of the Buddha himself slanders the Three Jewels, instructs another to slander the Three Jewels, [produces] causes of slander, conditions of slander, methods of slander, or karma of slander; whereas a bodhisattva, upon seeing a non-Buddhist or an evil person utter even a single sound of slandering the Buddha, feels as if three hundred lances were piercing his heart, how much less could he himself slander with his mouth, failing to generate a faithful mind and a filial mind, and instead further assisting evil people and people of wrong view to slander: this is a bodhisattva's parājika offense.