yastvaraṇinirmathanādi puruṣair nivṛttaṃ tatrāpauruṣeyatvāsambhavāt tato na hetor vyabhicāra iti bhāvaḥ /
However, that [fire] which is produced by humans through the rubbing of fire-sticks and such means—since non-human origin is impossible there—cannot serve to invalidate the [Mīmāṃsaka's] reason; this is the intended meaning.