tayor hetuphalatābhāvayor bhāvas tadbhāvas tatra vyavahāro yaḥ sa tadbhāvavyavahāraḥ /
The existence [bhāva] of those two - the relation of cause and effect and non-existence - is tadbhāva, and the conventional usage [vyavahāra] concerning that is tadbhāvavyavahāra.