Bhagavatapurana 2.2.12

2.2.12

adīnalīlāhasitekṣaṇollasad bhrūbhaṅgasaṃsūcitabhūryanugraham /
īkṣeta cintāmayam enam īśvaraṃ yāvan mano dhāraṇayāvatiṣṭhate //

12. Atman who indicates His unlimited grace (to the devout) by a motion of His brows rendered brilliant with His sublime and sportful smiles and looks:—this Atman the ruler of rulers, who is pure intelligence, —one should look fixedly on Him (in his meditation) as long as the mind is steady in Dharana (concentration).