Shiva Purana
अणोरणीयान्महतो महीयानयमव्ययः ॥ गुहायां निहितश्चापि जंतोरस्य महेश्वरः ॥ २४ ॥
He is subtler than the atom, greater than the greatest. He is the unchanging. He lies in the cavity of the heart of this Paśu.
english translation
aNoraNIyAnmahato mahIyAnayamavyayaH ॥ guhAyAM nihitazcApi jaMtorasya mahezvaraH ॥ 24 ॥
hk transliteration by Sanscript