Indeed, one should bathe before adoring the celestials and reverentially saluting the preceptor. One should never go to a sacrifice unless invited. Indeed, one may go there without an invitation, if he wishes to only see how the sacrifice is conducted. If one goes to a sacrifice without an invitation and if one does not on that account, receive proper adoration from the sacrificer, his life becomes shortened. One should never go alone on a journey to foreign parts. Nor should one ever go alone to any place at night.