Vaisesika Sūtra 7.2.13

युतसिद्धयभावात् कार्यकारणयोः संयोगविभागौ न विद्येते ॥१३॥

yuta-siddhi-abhāvāt kārya-kāraṇayoḥ saṁyoga-vibhāgau na vidyete ॥13॥

[युतसिद्धि-अभावात् (yuta-siddhi-abhāvāt) - due to absence of combined existence; कार्य-कारणयोः (kārya-kāraṇayoḥ) - of effect and cause; संयोग-विभागौ (saṁyoga-vibhāgau) - conjunction and disjunction; न विद्येते (na vidyete) - do not exist;]

Due to the absence of combined existence between cause and effect, conjunction and disjunction of these do not exist.