Not graded
Hisn al-Muslim (Fortress of the Muslim) 13
(أَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ وَأَشْهَدُ أَنَّ مُحَمَّداً عَبْدُهُ وَرَسُولُهُ..).
(I bear witness that none has the right to be worshipped except Allah, alone without partner, and I bear witness that Muhammad is His slave and Messenger.)
Cited in Hisn al-Muslim (Fortress of the Muslim) (No. 13).