Shiva Purana
ककुत्स्थश्चापि मांधाता सगरश्शैवसत्तमः॥ मुचुकुन्दो हरिश्चन्द्रः कल्माषांघ्रिस्तथैव च॥ २६॥
Kakutstha, Māndhātā, Sagara, Mucukunda, Hariścandra and Kalmāṣāṅghri were all excellent devotees of Śiva.
english translation
kakutsthazcApi mAMdhAtA sagarazzaivasattamaH॥ mucukundo harizcandraH kalmASAMghristathaiva ca॥ 26॥
hk transliteration by Sanscript