Tantra Sāra 1.014
नारायणाष्टाक्षराच्च व्याहृतित्रिगुणात्पुनः। वेदमाता तु गायत्री द्विगुणा द्वादशाक्षरात् ॥१४॥
By recitation of the Nārāyana eight syllable mantra three times manifests the mother of Vēdas Gāyatrī mantra. It is also obtained by reciting twice the twelve letter mantra.
Note:
3 x 8 syllables of "Ōm-Na-Mo-Nā-Rā-Ya-Nā-Ya" = 24 syllables of Gāyatrī
2 X 12 syllables of "Ōm Na-Mō Bha-Ga-Va-Tē Vā-Su-Dē-Vā-Ya" = 24 syllables of Gāyatrī
2 X 12 syllables of "Ōm Na-Mō Bha-Ga-Va-Tē Vā-Su-Dē-Vā-Ya" = 24 syllables of Gāyatrī
A pictorial representation:
