Medicine Buddha made 12 vows when he was a Bodhisattva before he attained the stage of Buddha-hood.

12 vows

1. His body will produce light, radiating to endless space. All Sentient Beings will have the same appearance as his.

2. His body will shine like a Blue colored treasure stone, clear, pure and bright, penetrating even to the darkest area, in order to help those to understand.

3. He will give wisdom to all sentient beings and ensure they should not lack the tools to achieve their objectives.

4. He will guide bad people on to the right path.

5. He will make every effort to help all those who remembered and chanted his name Yok-shi-lau-lei-kwong Yue Loi gradually to progress toward Buddha land.

6. He will help those suffering from disabilities who remembered and chanted his name, gradually to resolve all their problems.

7. He will help the poor, the sick and homeless who remembered and chanted his name, to overcome their problems.

8. Any woman not satisfied being feminine should become a man in her next life if she remembered and chanted his name.

9. He will protect everybody from evil or danger and help them keep to the right path if they remembered and chanted his name.

10. He will guide the prisoners on the right path if they remembered and chanted his name.

11. Those persons who were poor and needy for food and doing evil deeds in order to get their needs, will be guided on the right path if they remembered and chanted his name.

12. Those with no clothes who remembered and chanted his name will be clothed.