Bhagavad Gita 12.4संनियम्येन्द्रियग्रामं सर्वत्र समबुद्धयः।ते प्राप्नुवन्ति मामेव सर्वभूतहिते रताः ॥

Those who are free from likes and dislikes (attraction and repulsion) can possess,equanimity of mind. Those who have destroyed ignorance which is the cause for exhilaration and grief, through the knowledge of the Self, those who are free from all kinds of sensual cravings through the constant practice of finding the defects or the evil in sensual pleasures can have evenness of mind. Those who are neither elated nor troubled when they get desirable or undesirable objects can possess evenness of mind.The two currents of love and hatred (likes and dislikes) make a man think of harming others. When these two are destroyed through meditation on the Self, the Yogi is intent on the welfare of others. He rejoices in doing service to the people. He plunges himself in service. He works constantly for the solidarity or wellbeing of this world. He gives fearlessness (Abhayadana) to all creatures. No creature is afraid of him. He becomes a Paramahamsa Sannyasi who gives shelter to all in his heart. He attains Selfrealisation. He becoes a knower of Brahman. The knower of Brahman becomes Brahman.By means of the control of the senses the Yogi closes the ten doors (the senses) and withdraws the senses from the sensual objects and fixes the mind on the innermost Self