法苑珠林 75.72

75.72

又薩婆多論云。不妄語者。若說法議論傳語一切是非。莫自稱為。是常令推寄有本。則無過也。不爾斧在口中。又十誦律云。若語高姓人云是下賤。若兩眼人云是一眼。並得妄語。又語一眼人汝是瞎眼人。並得輕惱他罪。

Furthermore, the Sarvāstivāda-śāstra says: Regarding not speaking falsely: if one explains the Dharma, engages in discussions, or conveys words concerning right and wrong of all kinds, do not claim oneself to be right. Always make sure to defer and cite an authoritative source; then there will be no fault. If not, an axe is in one's mouth. Furthermore, the Vinaya of the Ten Recitations says: If one says to a person of high caste that they are of low and base birth, or says to a two-eyed person that they have only one eye, both constitute false speech. Moreover, saying to a one-eyed person, 'You are a blind person,' also incurs the offence of slighting and tormenting others.