Vaisesika Sūtra 7.1.03

एतेन नित्येषु नित्यत्वमुक्तम् ॥३॥

etena nityeṣu nityatvam-uktam ॥3॥

[एतेन (etena) - by this; नित्येषु (nityeṣu) - in eternal things; नित्यत्वम् (nityatvam) - eternality; उक्तम् (uktam) - is stated;]

By this, eternality in eternal things is stated.