Verse
शनैः शनैरुपरमेद् बुद्ध्या धृतिगृहीतया ।आत्मसंस्थं मनः कृत्वा न किंचिदपि चिन्तयेत् ॥
Abandoning without any exception or residue all the desires born of the desire-will and holding the senses by the mind so that they shall not run to all sides (after their usual disorderly and restless habit), one should slowly cease from mental action by a buddhi held in the grasp of fixity, and having fixed the mind in the higher Self one should not think of any thing at all.
Gītā 6·25