Vaisesika Sūtras
Vaisesika Sūtra 10.1.04
अभूदित्यपि ॥४॥
abhūt iti api ॥4॥
[अभूत् (abhūt) - it was; इति (iti) - thus; अपि (api) - also;]
Thus, the conclusion, "It was," as well.