Patanjali laid out yoga’s ethical guidelines in his Yoga Sūtras
yamas (social ethics)
- ahimsa (non-harming)
- satya (truthfulness)
- asteya (non-stealing)
- brahmacharya (moderation)
- aparigraha (non-grasping)
niyyamas (personal observances)
- saucha (purity)
- santosha (contentment)
- tapas (self-discipline)
- svadhyaya (self-study)
- Ishvara pranidhana (surrender)