अस्मात्पंचाक्षरं जज्ञे बोधकं सकलस्यतत् । आकारादिक्रमेणैव नकारादियथाक्रमम् २१ ।
From this also is born the five-syllabled mantra (Namaśśivāya). It indicates all knowledge. The syllables “NA” etc. follow the order of the syllables “A” etc.
The entire set of Vedas and crores of mantras were born of that. Different things are achieved through different mantras but everything is achieved through Oṃkāra alone.
नंदिकेश्वर उवाच । पुनस्तयोस्तत्र तिरः पटं गुरुः प्रकल्प्य मंत्रं च समादिशत्परम् । निधाय तच्छीर्ष्णि करांबुजं शनैरुदण्मुखं संस्थितयोः सहांबिकः २५ ।
Nandikeśvara said: The lord in the company of his consort Ambikā, assumed the role of the preceptor for both of them. He screened them and placed his lotus-like hand on their heads as they faced the north and slowly taught them the great mantra.