अभ्रपटलमष्टकेन द्विगुणवास्तुके वा रूपे बध्यते ॥ कZ_०२.१४.३९ ॥
abhrapaṭalam aṣṭakena dviguṇavāstuke vā rūpe badhyate
A mica sheet is to be bound/packaged as an «aṣṭaka» unit, or in a double-structured (two-layer) form.
Standardized bundling reduces substitution and simplifies counting/assessment for taxation, storage, and audit.