“Once I asked Abu ‘Abdillah (a.s.) ‘Are the traditions, Sunan of the Messenger of Allah like the obligations Allah, the Most Majestic, the Most Holy, has sanctioned?’ The Imam said, ‘Allah, the Most Majestic, the Most Holy, has sanctioned obligations that are compulsory for the servants (of Allah). Whoever ignores an obligation of the compulsory ones; does not perform it and rejects it, he becomes an unbeliever. The Messenger of Allah has commanded certain matters to be performed and they all are good deeds. One does not become an unbeliever for ignoring a few of the obligations that Allah, the Most Majestic, the Most Holy, has commanded His servant to perform, however, he has ignored a virtue and has cut down goodness.’”