Shiva Purana
पशुपाशपतिज्ञानं ज्ञानमित्यभिधीयते ॥ षडध्वशुद्धिर्विधिना गुर्वधीना क्रियोच्यते ॥ ३१ ॥
Jñāna is the knowledge of Paśu, Pāśa and Pati. Kriyā is the purificatory rite in regard to the six paths under the instructions of the preceptor.
english translation
pazupAzapatijJAnaM jJAnamityabhidhIyate ॥ SaDadhvazuddhirvidhinA gurvadhInA kriyocyate ॥ 31 ॥
hk transliteration by Sanscript