Yoga Sutras of Patanjali · 3.46

रूपलावण्यबलवज्रसंहननत्वानि कायसम्पत्॥४६॥

rūpa-lāvaṇya-bala-vajra-saṁhananatvāni kāyasampat

Bodily perfection consists in beauty of form, grace, strength, and diamond-hard compactness.

— Yoga Sutras of Patanjali 3.46

Source: Sanskrit attributed to Patanjali (c. 2nd century BCE – 4th century CE). Public-domain English readings drawn from Swami Vivekananda's 'Raja Yoga' (1896) and Charles Johnston's 'The Yoga Sutras of Patanjali' (1912).