Shiva Purana
तस्मात्त्रिपुण्ड्रमेवैकं लिखेदुद्धूलनं विना ॥ रुद्राक्षान्धारयेद्मूर्ध्नि कंठे श्रोते करे तथा ॥ ३५ ॥
Hence it is better to have Tripuṇḍras above without dusting. He shall wear Rudrākṣa beads on the head, round the neck, in the ears and hands.
english translation
tasmAttripuNDramevaikaM likheduddhUlanaM vinA ॥ rudrAkSAndhArayedmUrdhni kaMThe zrote kare tathA ॥ 35 ॥
hk transliteration by Sanscript