Bhagavatapurana 3.28.6

3.28.6

sva-dhiṣṇyānām eka-deśe manasā prāṇa-dhāraṇam /
vaikuṇṭha-līlābhidhyānaṃ samādhānaṃ tathātmanaḥ //

6. Holding the breath and also the mind confined to one of the places belonging to it; the contemplation of the Leelas of Vaikuntha, the Supreme Lord, and having the mind imbued with the state or form of Atman;