Ikhlas, purification, is a pure intention and clean belief, liberation and purification of heart from any darkness and ill-will that might make its merit agitated and gloomy. Refining one's behavior from the whole contamination is refraining from any snobbishness and selfishness and it is a secret out of the Almighty mysteries inserted into the heart and mind of created mankind.Mokhlesan, pure people, are adored with courtesy and are far from ugly features, and in terms of praying they focus nothing but God, and they worship Him purely.Perfection, defect, healthiness, and corruption of praying is subject to pure intention and willfulness. Worshiping and serving God purely causes resolution of job problems, proliferation of cognition and upsurge of knowledge within one' s heart and its outpouring on the tongue, pleasing wisdom and heart and eternal tranquility and rest. This paper endeavors to explore the different aspects of the topic as viewed in Rumi's Couplet as the greatest and most perfect mystical work.