Shiva Purana
प्राणायाममुखा सैव स्पर्शे योगोभिधीयते ॥ स मंत्रस्पर्शनिर्मुक्तो भावयोगः प्रकीर्तितः ॥ ९ ॥
Coupled with Prāṇāyāma the same is called sparśayoga. Without the contact of Mantra, it is Bhāvayoga.
english translation
prANAyAmamukhA saiva sparze yogobhidhIyate ॥ sa maMtrasparzanirmukto bhAvayogaH prakIrtitaH ॥ 9 ॥
hk transliteration by Sanscript