One of them was the library of Sabur...

One of them was the library of Sabur, which was established for the Shiite scholars in Karakh, in Baghdad, while the other was the library of his tutor, Sharif al-Murtada, which was estimated to have contained eighty thousand books. Some of these books remained up until the time of Ibn Idris al-Hilli (may Allah have mercy on him) from which he compiled Mustatrafat as-Sara’ir .

Immunity of Part of the Source Books on Supplication from being Lost Agha Buzurg at-Tahrani says in adh-Dhari’ah , “In general, these treatises ( usul ) on supplication which were in the Shapur library, with either a general or specific title, were all destroyed by the fire as explained by Yaqut. However, we did not lose anything from them except for their objective existence.

Otherwise, with regard to their content, of the supplications, the formulas of remembrance ( adhkar ) and the visitations ( Ziyarat ), they have reached us exactly in the same way as they were recorded in those treatises ( usul ).

This is because many years before the date of the burning {of the library} some of the great scholars had already written books on supplication, a‘mal and Ziyarat , drawing all that which they brought in their books from the treatises on supplication ( al-usul ad-du‘aiyyah ).

These books which were composed out of those treatises before the burning {of the library} continue to exist up to this day, like Kitab ad-du’a’ of Shaykh al-Kulayni (d.329 H), Kamil al-Ziyarat of Ibn Qulawayh (d.360 H), Kitab ad-du’a’ wa al-Mazar of…