tathā hi tulye 'pi sarveṣāṃ hetutve kasmācchabdabodhātmakam eva bhavati śabdajñānaṃ na śrotrādibodhātmakam iti codye hetuśaktipratiniyamairevottaraṃvācyam
For when faced with the question "If all [factors] are equally causes, why does the cognition of sound have the nature of apprehending sound only, and not the nature of apprehending the auditory organ etc.?", the only answer possible would be [to invoke] the restriction of causal efficiency.