Nahjul Balagha is a collection of sayings, sermons and letters of Ameerul Mo’mineen compiled by Al-Shareef Al-Radhi who was one of great scholars in the fifth century after Hijra.
‘Nahjul Balagha does not contain any praise to persons who disobeyed the Prophey especially those who stopped and prevented the Prophet from writing his last will. You can refer to Sunni books like Bukhari and read about this.
‘Wassalam.