Bhagavatapurana 3.5.46

3.5.46

tathāpare cātma-samādhi-yoga- balena jitvā prakṛtiṃ baliṣṭhām /
tvām eva dhīrāḥ puruṣaṃ viśanti teṣāṃ śramaḥ syān na tu sevayā te //

46. But others subdue this most powerful Prakriti by the strength of yoga which consists in the concentration of the mind upon Atman; and thus being firm in their conviction and faith, they enter Thee, the Purusha; and great is the hardship these undergo, whereas there is no hardship whatever in worshipping Thee.