While we do respect the scholarly approach taken by Sayyid al-Ḥaydarī, there is one very important point that he seems to have overlooked, and that is the absence of his version (containing tumakkinahū) in the numerous other sources that mention this supplication. In fact, Tahdhīb al-Aḥkām, which is essentially a book that deals with ḥadīth about legal issues and how to resolve contradicting narrations, is the only souce that quotes this version. Shaykh al-Ṭūsī himself quotes the more commonly recited version (i.e. tumattiʿahū) in his Miṣbāḥ al-Mutahajjid (2:631), which is actually a book of supplications and prayers. In addition, all the earlier and later scholars who quoted this supplication in their works used the common version. Therefore, the fact that Shaykh al-Ṭāʾifah has mentioned the second version in his Tahdhīb al-Aḥkām does not suffice to prove its correctness or even that the other version (which has even been recorded in earlier works) is the result of copyist error.