From Rigpa Wiki
Sutrayana (Skt. sūtrayāna) — the Sutrayana, which encompasses the teachings of both Hinayana and Mahayana, is known as the ‘Causal Vehicle’, because the path is followed in order to establish the cause for attaining enlightenment. The six perfections, thirty-seven factors of enlightenment, and a variety of ethical and intellectual disciplines are practised as causes for achieving the final result. Buddhahood emerges as the result when all such causes are complete. In Sutrayana the mind will gather the two accumulations of wisdom and merit, which are the respective causes for the attainments of dharmakaya and rupakaya. The mind is thus considered the cause of this attainment.