To defeat an enemy, you must know where they hide. Krishna maps out the exact geographical bases (adhiṣṭhānam) of Kāma (lust/desire). The enemy has three fortresses: the senses (indriyāṇi), the mind (mano), and the intellect (buddhiḥ). By occupying these three strategic command centers, this enemy completely covers and suffocates the true knowledge (jñānam āvṛtya) of the embodied soul (dehinam), leaving the person utterly bewildered (vimohayatyeṣa).