B.G 6.24 and 25
saṁṅkalpaprabhavānkāmāṁstyaktvā sarvānaśeṣataḥ। manasaiveṁdriyagrāmaṁ viniyamya samantataḥ ॥24॥
śanaiḥ śanairuparamedbuddhyā dhr̥tigr̥hītayā। ātmasaṁsthaṁ manaḥ kr̥tvā na kiñcidapi cintayet ॥25॥
Having abandoned all desires arising from intentions without a residue; controlling the group of senses with the mind, indeed from all sides; gradually, slowly, one should withdraw with the help of firm intelligence. Having made the mind established in the Lord, one should certainly not think of anything else.
Gīta Bhāshya 6.24 and 25
'sarvān' - all topics; 'aśeṣataḥ' - Even on a single topic, a small amount of desire should not be left at any point in time. The word 'eva' provides exclusivity to control of mind as a means. The control of the mind and delighting in the lord within are the causes for such an intelligence.
sarvān sarvaviṣayān । aśeṣataḥ, ekaviṣayopi kāmaḥ svalpaḥ kādācitkopi na kartavya ityarthaḥ । manasaiva niyantuṁ śakyate nānyenetyevaśabdaḥ ॥24॥
The word 'sarvān' refers to 'all topics'. The word 'aśeṣataḥ' means 'Even on a single topic, a small amount of desire should not be left at any point in time'. Indeed, it is possible to control only by the mind, not by others. Hence, the word 'eva', i.e. 'only', is used.
buddheḥ karaṇatvaṁ manonigrahe ātmaramaṇe ca ॥25॥
The cause of such intelligence is because of control of the mind and also delighting in the Lord within.
