tathā hi keśoṇḍrakādibuddhīnām api prāmāṇyaprasaṅgān mābhūd ativyāpitā lakṣaṇadoṣa ityato 'vaśyakaraṇīyamabhrāntagrahaṇam ityuktam /
For it has been explained that the inclusion of "non-erroneous" is necessary to prevent the definitional fault of over-extension, since [otherwise] even cognitions of [illusory things] like hair-tufts [in the sky] would [absurdly] be valid cognitions.