Patañjali’s eight limbs lead from conduct to absorption: yama, ethical restraints; niyama, observances; āsana, posture; prāṇāyāma, regulation of breath; pratyāhāra, withdrawal of the senses; dhāraṇā, concentration; dhyāna, meditation; and samādhi, absorption. The first five are called outer limbs, the last three, together called saṃyama, inner limbs.
Aṣṭāṅga yoga
The eight limbs of classical yoga: restraints, observances, posture, breath, withdrawal, concentration, meditation and absorption.
Also: eight limbs, Ashtanga