人本(rén běn) “the nature of human beings”
not found at HD. 1.1037.; not found at DK. 1.567.;
92b24.其樂下劣小乘行者，則自亡失，遠乎人種，不解人本，爲欲所縛(p)
K. 187.1.sattva-dhātu~; L. 25c24.衆生之性;