Shiva Purana
एवं ज्ञात्वा तु माहात्म्यं रुद्रा क्षस्य महेश्वरि । सम्यग्धार्यास्समंत्राश्च भक्त्याधर्मविवृद्धये ८७ ।
Thus realising its greatness the Rudrākṣa must be worn well, O Maheśvarī, repeating the mantras with devotion to make virtues flourish.
english translation
evaM jJAtvA tu mAhAtmyaM rudrA kSasya mahezvari । samyagdhAryAssamaMtrAzca bhaktyAdharmavivRddhaye 87 ।
hk transliteration by Sanscript