question #3 Sahih al-Bukhari 6304, Book 80, Hadith 1 : What does the desire of the Prophet Muhammad (ﷺ) to reserve his special invocation for his followers indicate about his concern for them?

Allah’s Messenger (ﷺ) said, “For every prophet there is one (special
invocation (that will not be rejected) with which he appeals (to
Allah), and I want to keep such an invocation for interceding for my
followers in the Hereafter.”