prayogaḥ yat sattātsarvaṃ kṣaṇikam yathā samanantaraṃ pratipāditāḥ kṣaṇikāḥ padārthāḥ santaś ca bhavatā vyomādayo bhāvā iṣyante iti svabhāvahetuḥ /
The logical formulation is: Whatever is existent is momentary, just as [those] entities proven [to be] momentary just now; and ākāśa and other entities are accepted by you as existent - this is [thus] a natural reason.