“I once said to abu ‘Abd Allah (a.s.), ‘Sometimes when on a journey we do not find bran; if we can rub with flour.’ He (the Imam) said, ‘It is not harmful. It is bad only when belongings are destroyed and the body is harmed. If body is benefited then it is not bad. I sometimes command my slave to prepare bleached flour with oil and I rub with it.’”