Shiva Purana
अध्यापनं चाध्ययनं यजनं याजनं तथा ॥ ध्यानमीश्वरभावश्च सततं ज्ञानशीलता ॥ य एवं वर्तते विप्रो ज्ञानयोगस्य सिद्धये ॥ ३९ ॥
Teaching, studying, performing sacrifices and performing sacrifices. Meditation and consciousness of the Lord are always the cultivation of knowledge. A brāhmaṇa who thus conducts himself in this way is perfect in the process of transcendental knowledge.
english translation
adhyApanaM cAdhyayanaM yajanaM yAjanaM tathA ॥ dhyAnamIzvarabhAvazca satataM jJAnazIlatA ॥ ya evaM vartate vipro jJAnayogasya siddhaye ॥ 39 ॥
hk transliteration by Sanscript