Shiva Purana
रुद्रा क्षं यस्य गात्रेषु ललाटे तु त्रिपंड्रकम् । सचांडालोपि संपूज्यस्सर्ववर्णोत्तमोत्तमः ६२ ।
Even a Cāṇḍāla who wears Rudrākṣa over his body and the Tripuṇḍra on his forehead, is worthy of respect. He is the most excellent of all castes.
english translation
rudrA kSaM yasya gAtreSu lalATe tu tripaMDrakam । sacAMDAlopi saMpUjyassarvavarNottamottamaH 62 ।
hk transliteration by Sanscript