The Six Perfections

To become a buddha, a bodhisattva has to practise six perfections:

1. the perfection of GIVING (dana paramita)
2. the perfection of MORALITY (intention, speech, action, livelihood) (shila-paramita)
3. the perfection of PATIENCE (kshanti-paramita)
4. the perfection of ENERGY (virya-paramita)
5. the perfection of MEDITATION (dhyana-paramita)
6. the perfection of WISDOM (prajna-paramita)

http://www.fpmt.org/education/teachings/242-teachings/909-the-graduated-path-to-liberation.html?showall=&start=4