viśliṣyamāṇasandhau ca dārvādau paraśucchidā / praviśannucyate tena tatraikatvamavasthitam //
When the joint [of fibers] in wood and similar [materials] is being split by the cut of an axe, [the axe] entering [into it] is therefore called [the cut itself], [thus] identity is established there.