Avatarika
एवं विशिष्टमधिकारिणमभिधाय तदुपासनाप्रारम्भस्य प्रणवोपासनापूर्वकत्वात्, प्रणवमात्रानृसिंहव्यूहे— 'ॐ सं ॐ यो वै नृसिंहो देवो भगवान्याश्चतस्रोऽर्धमात्रास्तस्मै वै नमो नमः' इति मन्त्रवर्णात् पुरश्चरणोपासनान्तर्गतत्वेन स्थितेऽपि, अत्रापि मात्राशब्दादर्धशब्दाच्चतुःशब्दाच्च तन्मात्राव्यूहप्रत्यभिज्ञानात् तस्मिन्नेव व्यूहे चतुर्मात्रासंबन्धित्वेन उपासनाविशेषमाह—
In plain words
Having laid out exactly who is fit to undertake this, one thing needs saying first: the meditation itself opens with meditation on the Praṇava -- on that array where Om's own moras are Narasiṃha. The mantra already says as much: 'Om, saṃ, Om -- whoever is Narasiṃha, the god, the blessed one, whose four half-moras are his own -- to him, salutation, salutation.' That belongs, strictly, inside the larger preliminary practice already described. But look again at that very verse: the words 'mora', 'half', and 'four' are not incidental -- they point straight back to this same array of moras. So, staying within that one array, and specifically in terms of its four moras, a particular meditation is now given --
Close to the Sanskrit
Having thus described the qualified practitioner, because the commencement of that meditation is preceded by meditation on the Praṇava -- in the array [made] of the Praṇava's moras [identified with] Narasiṃha -- from the wording of the mantra 'Om, saṃ, Om -- whoever indeed is Narasiṃha, the god, the blessed one, whose four half-moras [are his] -- to him indeed, salutation, salutation' -- even though this stands as included within the meditation that is the preliminary practice, here too, from the word 'mora', from the word 'half', and from the word 'four', through the recognition that these refer to that same array of moras, in that very array, with respect to the connection with the four moras, he states a particular meditation --