本端(běn duān) “beginning, root”
not found at HD. 4.718; not found at DK. 6.32;
86a5.譬如人生盲 不见日月光 五色及十方 谓天下无此 良医探本端 见四病阴盖 慈哀怜愍之 入山为求药(v)
K. 139.5.-; not found at L. 20b24; not found at Ten. 154b28;