While sitting on his throne or in his sitting room, while lying on his bed, or, indeed, while situated anywhere, and while eating, sleeping or walking, Kaṁsa saw only his enemy, the Supreme Lord, Hṛṣīkeśa. In other words, by thinking of his all-pervading enemy, Kaṁsa became unfavorably Kṛṣṇa conscious.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
आसीनः संविशंस्तिष्ठन् भुञ्जानः पर्यटन्महीम् । चिन्तयानो हृषीकेशमपश्यत्तन्मयं जगत्
āsīnaḥ saṃviśaṃstiṣṭhan bhuñjānaḥ paryaṭanmahīm | cintayāno hṛṣīkeśamapaśyattanmayaṃ jagat
SB 10.2.24