Shiva Purana
समाधौ च विलीनोभूदासने संस्थितः स्वयम् ॥ प्राणायामं त्रिरावृत्त्या कृत्वा मुनिवरस्तदा ॥ १३॥
The sage then sat in the yogic pose, repeated the Prāṇāyāma three times and sank into the yogic trance.
english translation
samAdhau ca vilInobhUdAsane saMsthitaH svayam ॥ prANAyAmaM trirAvRttyA kRtvA munivarastadA ॥ 13॥
hk transliteration by Sanscript