Shiva Purana
यथा च दृश्यते लोके रुद्रा क्षफलदः शुभः । न तथा दृश्यतेऽन्या च मालिका परमेश्वरि 1-25-२० ।
O Parameśvarī, no other necklace or garland is observed in the world to be so auspicious and fruitful as the Rudrākṣa.
english translation
yathA ca dRzyate loke rudrA kSaphaladaH zubhaH । na tathA dRzyate'nyA ca mAlikA paramezvari 1-25-20 ।
hk transliteration by Sanscript