Vaisesika Sūtra 7.1.09

कारणबहुत्वाच्च ॥९॥

kāraṇabahutvācca ॥9॥

[कारण (kāraṇa) - cause; बहुत्वात् (bahutvāt) - from multiplicity; च (ca) - and;]

And from the multiplicity of causes.