Laṅkāvatāra Sūtra

“Thus, Mahāmati, wherever there is the evolution of living beings, let people cherish the thought of kinship with them, and, thinking that all beings are [to be loved as if they were] an only child, let them refrain from eating meat. So with Bodhisattvas whose nature is compassion, [the eating of] meat is to be avoided by him. Even in exceptional cases, it is not [compassionate] of a Bodhisattva of good standing to eat meat.”

“For fear of causing terror to living beings, Mahāmati, let the Bodhisattva who is disciplining himself to attain compassion, refrain from eating flesh.”

“The food of the wise, Mahāmati, is what is eaten by the Rishis; it does not consist of meat and blood.”

“If, Mahāmati, meat is not eaten by anybody for any reason, there will be no destroyer of life.”

“… all [meat-eating] in any form, in any manner, and in any place, is unconditionally and once for all, prohibited for all. Thus, Mahāmati, meat-eating I have not permitted to anyone, I do not permit, I will not permit. Meat-eating, I tell you, Mahāmati, is not proper for homeless monks.”

“From eating [meat] arrogance is born, from arrogance erroneous imaginations issue, and from imagination is born greed; and for this reason refrain from eating [meat].”

“There is no meat to be regarded as pure in three ways: not premeditated, not asked for, and not impelled; therefore, refrain from eating meat.”

“Nirvana transcends all duality of knower and known, of being and non-being.”