bhinneṣu digdeśeṣvabhinnasya śabdasya grahaṇasiddhyarthaṃ yo dharmo yujyate sa evānyathānupapattyāṅgīkriyate
Whatever property is suitable for explaining the apprehension of an undivided sound in different directions and places, that very [property] is accepted through the impossibility of explaining [it] otherwise.