त्रिरज्जुकं निवर्तनमेकतः ॥ कZ_०२.२०.२३ ॥
trirajjukaṃ nivartanam ekataḥ
一个 nivartana 的一边为三条 rajju(即以一边长度三条 rajju 来界定)。
To define the unit by a measurable side-length in field conditions; it supports consistent area computation and prevents manipulation of irregular plots.