prakṛtyādimūrtasya svopādānadeśaparihāreṇotpadyamānasyopādānadeśotpādahetutvādādhāro gamanapratibandhād vyavasthāpyate
In the case of corporeal [things] like Earth, [when something is] produced only in the location of its material cause and not elsewhere than its material cause's location, that which prevents [its] movement [away] is established as [its] substratum.