Bhagwad Gita
Chapter 18, Verse 45
स्वे स्वे कर्मण्यभिरतः संसिद्धिं लभते नरः।स्वकर्मनिरतः सिद्धिं यथा विन्दति तच्छृणु।।18.45।।
By following his qualities of work, every man can become perfect. Now please hear from Me how this can be done.