Vaisesika Sūtra 5.1.18

संस्काराभावे गुरुत्वात् पतनम् ॥१८॥

In the absence of impression, falling occurs due to gravity.

॥ पञ्चमोऽध्यायः प्रथमाह्निकम् समाप्तम् ॥

The first daily portion of the fifth chapter is completed.