The wise devotee shall wear the Rudrākṣa round the forearms with Aghora Bīja mantra. A string of fifteen beads shall be worn on the stomach with Vāmadeva mantra.
O Umā, daughter of the mountain, the white Rudrākṣa shall be worn by the brahmin, the red by the Kṣatriya, the yellow by the Vaiśya, the black by the Śūdra. This is the path indicated by the Vedas.
वर्णी वनी गृहयतीर्नियमेन दध्यादेतद्र हस्यपरमो न हि जातु तिष्ठेत् । रुद्रा क्षधारणमिदं सुकृतैश्च लभ्यं त्यक्त्वेदमेतदखिलान्नरकान्प्रयांति ४५ ।
Whether he is a householder, forest-dweller, ascetic or of any Order, none shall go out of this secret advice. Only by great merits can the opportunity to wear the Rudrākṣa be obtained. If he misses it he will go to hell.