金光明最勝王經疏 5.430

5.430

經　「過去現在十方諸佛，悉皆已習真實之語，能隨順說當機實語、無虛誑語，已於無量俱胝大劫常說實語，有實語者悉皆隨喜。」

The sūtra says: "All the buddhas of the ten directions in the past and present have all already practiced true words, are able to speak true words that accord with the capacities [of beings], free of false and deceitful words, and have for immeasurable koṭis of great kalpas constantly spoken true words; in whoever speaks true words, they fully rejoice."