Shiva Purana
फलमूलाशनप्रायाः प्राणायामपरायणाः ॥ शिवाभिमानसंपन्नाः शिवध्यानैकतत्पराः ॥ २६ ॥
Mostly their diet was confined to fruits and roots. They regularly practised Prāṇāyāma. They were rich in their pride in Śiva. They were devoted to meditations upon Śiva alone.
english translation
phalamUlAzanaprAyAH prANAyAmaparAyaNAH ॥ zivAbhimAnasaMpannAH zivadhyAnaikatatparAH ॥ 26 ॥
hk transliteration by Sanscript