Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Atma-Samyama Yoga Chapter 6, Verse 6.25.
Sanskrit
शनैः शनैरुपरमेद्u200cबुद्ध्या धृतिगृहीतया । आत्मसंस्थं मनः कृत्वा न किंचिदपि चिन्तयेत् ॥ ६.२५ ॥
Hindi
क्रम-क्रमसे अभ्यास करता हुआ उपरतिको प्राप्त हो तथा धैर्ययुक्त बुद्धिके द्वारा मनको परमात्मामें स्थित करके परमात्माके सिवा और कुछ भी चिन्तन न करे|
English
Once one has completely given up all desires created from his imagination and once one has learned to mentally control all of his senses, one slowly and gradually becomes peaceful. A true Yogi with a steady intellect fixes his mind only on God and thinks of nothing else but the Lord.