नागवृक्षो लिकुचो बकुलो वटश्च योनयः ॥ कZ_०२.११.१०८ ॥
nāgavṛkṣo likuco bakulo vaṭaśca yonayaḥ
The sources (yonayaḥ) are: the nāgavṛkṣa, the likuca, the bakula, and the vaṭa (trees).
So officials can verify claims about textile type/quality, prevent adulteration, and manage supply chains for state workshops and purchases.
A traceability principle: classification is tied to identifiable origins of the fibre.