तपनीयमुज्ज्वाल्य रागत्रिभागं दद्यात्पीतरागं भवति ॥ कZ_०२.१३.५३ ॥
tapanīyam ujjvālya rāgatribhāgaṃ dadyāt pītarāgaṃ bhavati
Après avoir chauffé l’or raffiné (tapanīya), on doit ajouter trois parts du mélange colorant (rāga) ; il devient d’un éclat jaune (pītarāga).
It constrains discretionary variation by artisans, making output predictable and enabling audits of material consumption.