He has (surely great) strength and great energy, else he would not have gone of his own accord. There is nothing in the three worlds that Brahmanas among all mortal men cannot accomplish. Abstaining from food, living on air, eating fruits, observing severe vows,
शक्तिरस्य महोत्साहा न ह्यशक्तः स्वयं व्रजेत्। न च तद्विद्यते किंचित् कर्म लोकेषु यद्भवेत्॥ ब्राह्मणानामसाध्यं च नृषु संस्थानचारिषु। अब्भक्षा वायुभक्षाश्च फलाहारा दृढव्रताः॥