Vaisesika Sūtras
Vaisesika Sūtra 2.2.12
तत्त्वं भावेन ॥१२॥
tattvaṁ bhāvena ॥12॥
[तत्त्वं (tattvaṁ) - the principle; भावेन (bhāvena) - is by becoming;]
The principle comes forth by becoming.