One should not vilify Brahmanas; nor should point at the stars with one's fingers. If asked, one should not say what the lunation is on a particular day. By telling it, his life becomes shortened.
न ब्राह्मणान् परिवदेन्नक्षत्राणि न निर्दिशेत्। तिथिं पक्षस्य न ब्रूयात् तथास्यायुर्न रिष्यते॥