Patanjali Yoga Sutra 2.29

Sanskrit Sutra

यम-नियमासन-प्राणायाम-प्रत्याहार-धारणा-ध्यान-समाधयोऽष्टावङ्गानि॥२९॥

Swami Vivekananda's translation

Yama, Niyama, Āsana, Prānāyāma, Pratyāhāra, Dhāranā, Dhyāna, and Samādhi are the eight limbs of Yoga.

Chapter link: Yoga Sutra Chapter 2