BṚHADĀRAṆYAKA UPANISHAD · 3.2.8

हस्तौ वै ग्रहः ।
स कर्मणातिग्रहेण गृहीतः ।
हस्ताभ्यां हि कर्म करोति ॥

hastau vai grahaḥ ।
sa karmaṇātigraheṇa gṛhītaḥ ।
hastābhyāṃ hi karma karoti ॥

'The arms are one Graha, and these are seized by work as the Atigrâha, for with the arms one works work.'

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)