Salamalikum
there were a few queries regarding 5th Sher

کملی والے کو ملا کیسے شہادت کا شرف
کہتے ہیں سرِّ شہادت میں صحیفے کیاکیا
Sirre Shahadain is a book written by Shah Abdul Aziz Mohaddis Dehlavi, an extremely renowned scholar of early 19th century AD.
He wrote in the book that the Prophet Muhammad saw is also a shaheed. He described that Prophet had two shahadatein one by way of shadat e Imam Hasan (as) and the other Imam Hussin (as).