KENA UPANISHAD · 4/8

तस्यै तपो दमः कर्मेति प्रतिष्ठा वेदाः सर्वाङ्गानि सत्यमायतनम् ॥

tasyai tapo damaḥ karmeti pratiṣṭhā vedāḥ sarvāṅgāni satyamāyatanam ॥

Of this knowledge austerity and self-conquest and works are the foundation, the Vedas are all its limbs, truth is its dwelling place.