Matsya Purana 183.52

183.52

śāstrāṇāntu varārohe! bahukāraṇadarśinaḥ.
na māṃ paśyanti te devi! jñānavākyavivādinaḥ .. 183.52 ..

Mahādeva said:—'Beautiful lady! They all worship Me, by reciting sacred mantras and by performing sacrifices. Those who worship Rudra and Mahādeva have no fear in this world. Devī! There are two kinds of worship, viz., with mantra and without mantra. There are two kinds of yogas, viz.—Sāṅkhya and Yoga. Those who regard Me omnipresent are Yogin. Those who see Me as the soul in all the beings and never separate Me from themselves never perish. Nirguṇa and Saguṇa are two kinds of yogas. Saguṇa yoga is comprehensible but Nirguṇa yoga cannot even be comprehended Devī! I have told you what you asked Me to explain."—43-48. Mahâdeva—"It is two yojanas in extent between the East and the West—56-61