Shiva Purana
ततस्समासान्मन्त्रार्थं वाच्यवाचकयोगतः ॥ समदिश्येश्वरं रूपं योगमासनमादिशेत् ॥ ६६ ॥
After briefly explaining to him the syllabic meaning of the mantra, the preceptor shall advise him about the form of the lord and instruct him in different postures.
english translation
tatassamAsAnmantrArthaM vAcyavAcakayogataH ॥ samadizyezvaraM rUpaM yogamAsanamAdizet ॥ 66 ॥
hk transliteration by Sanscript