atha cakṣurādīni tadā teṣāṃ yathārthajñānajanane, codanāyā atīndriyārthādhigame svata eva śaktir ityetad ādiśabdena saṃgṛhītam
If, however, [organs] like the eye [are meant], then they have an inherent capacity for generating accurate cognition, [and] the Vedic injunction has an inherent capacity for understanding supersensible objects - all this is included by the word "ādi."