yena tadvinivṛttyarthaṃ yatnaḥ sārthakatāṃ vrajet / sthāṇau niścitatādātmyo nānyathātvaṃ hi śaṅkate //
By what [means] could [your] effort become meaningful for removing that [doubt]? [For] when one has ascertained the identity [of something] as a post, one does not suspect it to be anything else.