Shiva Purana
रुद्रा क्षमालिनं दृष्ट्वा भूतप्रेतपिशाचकाः । डाकिनीशाकिनी चैव ये चान्ये द्रो हकारकाः ८४ ।
Upon seeing the one who wears Rudraksha beads (Rudrā kṣamālinam), the spirits, ghosts, demons, Ḍākīnī, śākīnī, and other treacherous beings, are immediately subdued.
english translation
rudrA kSamAlinaM dRSTvA bhUtapretapizAcakAH । DAkinIzAkinI caiva ye cAnye dro hakArakAH 84 ।
hk transliteration by Sanscript