Bodhisattva vow

The Bodhisattva vow is the vow taken by Mahayana Buddhists to attain complete enlightenment for the sake of all sentient beings. One who has taken the vow is nominally known as a Bodhisattva. Whereas the Prātimokṣa vows cease at death, the Bodhisattva vow extends into future lives. There are two traditions of the Bodhisattva vow, one originating from Asanga and the other from Nagarjuna.

A Bodhisattva vow is found at the end of the Avatamsaka Sutra by Samantabhadra. In the Bodhisattvacaryāvatāra, Shantideva explains that the Bodhisattva vow is taken with the following famous two verses from Sutra:

Just as all the previous Sugatas, the Buddhas
Generated the mind of enlightenment
And accomplished all the stages
Of the Bodhisattva training,
So will I too, for the sake of all beings,
Generate the mind of enlightenment
And accomplish all the stages
Of the Bodhisattva training.

As mentioned by Alexander Berzin (1997), the Bodhisattva vow transcends the present lifetime:

The promise to keep bodhisattva vows applies not only to this life, but to each subsequent lifetime until enlightenment. Thus these vows continue on our mind-stream into future lives.

In Mahayana Buddhism, the bodhisattva vows to work for the relief and liberation (nirvana) of all sentient beings as long as samsara persists.

This can be done by venerating all Buddhas and by cultivating supreme moral and spiritual perfection, to be placed in the service of others. In particular, Bodhisattvas promise to practice the six perfections of giving, moral discipline, patience, effort, concentration and wisdom in order to fulfill their bodhicitta aim of attaining enlightenment for the sake of all beings.

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