One should always leave a residue of the food that is placed before one for eating. Having finished his meals, one should mentally touch fire. If one eats with face turned eastwards, he becomes longlived. By eating with face turned south wards, one acquires great fame.
प्रस्कन्दयेच्च मनसा भुक्त्वा चाग्निमुपस्पृशेत्॥ आयुष्यं प्राङ्मुखो भुडक्ते यशस्य दक्षिणामुखः।