चतुररत्निर्दण्डो धनुर्नालिका पौरुषं च गार्हपत्यम् ॥ कZ_०२.२०.१८ ॥
caturaratnirdaṇḍo dhanurnālikā pauruṣaṃ ca gārhapatyam
A daṇḍa of four aratnis is the dhanu (bow) and the nālikā; and this pauruṣa is the gārhapatya (household/domestic) standard.
To align everyday trade and domestic practice with state-recognized units, reducing litigation and easing tax/market supervision.