Brahmapurana 246.19

Brahmapurāṇa 246.19

yaṃ yaṃ kāmam abhidhyāyañ śṛṇoti puruṣaḥ śuciḥ
taṃ taṃ kāmam avāpnoti naro nāsty atra saṃśayaḥ //