Skandapurana 7.20.354

7.20.354

( 5) yogino dhyānavidhervarṇanam . yogino lakṣaṇam, yuktasya lakṣaṇam, muktasya lakṣaṇam, yogino dhyānasaṃsiddheḥ sākhyānāṃ tatvaniścayasya māheśvaravidhiṃ vinā na viśeṣātiśayaḥ . praṇavamahimā, praṇavasvarūpam . praṇavacintanam .

(5) Description of the rules of meditation for a yogin. The characteristics of a yogin; the characteristics of one joined [in yoga]; the characteristics of a liberated soul; that for a yogin's attainment of meditation and for the Sāṅkhyas' determination of reality, there is no special excellence without the Māheśvara ordinances. The greatness of the praṇava; the true nature of the praṇava; contemplation of the praṇava.