Such nondevotees engage their senses in very troublesome and extensive work, and they suffer insomnia at night because their intelligence constantly breaks their sleep with various mental speculations. They are frustrated in all their various plans by supernatural power. Even great sages, if they are against Your transcendental topics, must rotate in this material world.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अह्न्यापृतार्तकरणा निशि निःशयाना नानामनोरथधिया क्षणभग्ननिद्राः । दैवाहतार्थरचना ऋषयोऽपि देव युष्मत्प्रसङ्गविमुखा इह संसरन्ति
ahnyāpṛtārtakaraṇā niśi niḥśayānā nānāmanorathadhiyā kṣaṇabhagnanidrāḥ | daivāhatārtharacanā ṛṣayo'pi deva yuṣmatprasaṅgavimukhā iha saṃsaranti
SB 3.9.10