Shiva Purana
नृसिंहकृत्तिवसनस्तदाप्रभृति शंकरः ॥ तद्वक्त्रं मुण्डमालायां नायकत्वेन कल्पितम् ॥ ३६ ॥
From that time Śiva began to wear the hide of the Man-lion. His head was the leading bead in his necklace of skulls.
english translation
nRsiMhakRttivasanastadAprabhRti zaMkaraH ॥ tadvaktraM muNDamAlAyAM nAyakatvena kalpitam ॥ 36 ॥
hk transliteration by Sanscript