藥師經疏 1.27

1.27

經。各各常以至毒害呪術　三憑非各各常以無益相加。謂互起意業謀相危害。或告林樹山塚神前而呪咀之令其衰損。此雖殺生及書怨名作其形像並是身業。此之身業但為表成呪咀語業。

Sūtra: Constantly, each [...] to [...] poisonous and harmful sorcery. Third, relying on wrongdoing. "Constantly, each adding unbeneficial things to the other" means mutually giving rise to mental karma to plot harm against each other, or reporting before the spirits of forests, trees, mountains, and tombs, and cursing them to cause their ruin and decline. Although killing living beings, writing the enemy's name, and making their likeness are bodily karma, this bodily karma merely serves to manifest and accomplish the vocal karma of cursing.