2. My father, my brother, ‘Ali ibn Ḥusain, and Muḥammad ibn Ḥasan all narrated to me from Aḥmad ibn Idrīs, from ‘Ubaydillāh ibn Mūsā, from Al-Washā, who said: I heard Imam Riďā (a.s.) say: There is a binding contract on every Shia and follower toward his Imam and the most perfect and beautiful way to fulfill this contract is to go to the Ziyārah of the grave of that Imam. On the Day of Judgment, the Imams (a.s.) will intercede for those who go to their Ziyārah while longing for it and believing in that which they have been ordered to believe. The above Ḥadīth has also been narrated to me through the following chain: Muḥammad ibn Ya’qūb Al-Kulayni, from Aḥmad ibn Idrīs, from ‘Ubaydillāh ibn Mūsā, from Al-Washā, from Imam Riďā (a.s.).

3. Muḥammad ibn Ja’far Al-Razzāz narrated to me from Muḥammad ibn Ḥusain ibn Abil Khaťťāb, from Abī Dāwūd Al-Mustariq, from Um Sa’īd Al-Aḥmasiyyah, who said: Abū ‘Abdillāh (Imam Sādiq (a.s.)) asked me, “O Um Sa’īd! Do you go to the Ziyārah of the grave of Ḥusain (a.s.)?” I replied, “Yes.” Imam (a.s.) said, “Go to his Ziyārah, for verily going to the Ziyārah of the grave of Ḥusain (a.s.) is WĀJIB (mandatory) on both men and women.”