One should always eat in a seated posture. One should never eat while walking. One should never answer a call of nature standing. One should never answer a call of nature on ashes or in a cowpen.
निषण्णश्चापि खादेत न तु गच्छन् कदाचन॥ मूत्रं नोत्तिष्ठता कार्यं न भस्मनि न गोव्रजे।