pāvakādīnām / na kevalamīśvarasyetyapiśabdaḥ / eṣa niyama iti / svahetubalasambhavakṛtaḥ
[It refers to] fire and such things. The word "api" [indicates that this applies] not only to God. "This restriction" means the restriction caused by the force of their own causes.