4. He said: Abul Qasim Ja’far ibn Muhammad reported to me from his father, from Sa’d ibn Abdillah, from Ahmad ibn Muhammad ibn Isa from al-Hasan ibn Mahboob from Hisham ibn Salim, from Zurarah ibn A’ayan (from al-Hasan al-Bazzaz), that: Abu Abdillah Ja’far ibn Muhammad al-Sadiq, peace be upon him, said: "May I not inform you about the most important duty Allah has imposed upon His creation?" I said: "Please do." He said: "To treat people justly, equal to yourself, and to grant preference to your brother; and to remember Allah in every situation. And by remembering, I do not mean chanting: ’Glory be to Allah’ and ’Praise be to Allah’ and ’There is no god but Allah’ and ’Allah is great’, altogether it is a part of remembering. But to remember Allah in every situation means to be invincible in matter of obedience to Allah or sinning against Him."