A comparative study of the primary rule for doubt from the viewpoint of Mohaghegh NÄÄ«nÄ« and ShahÄ«d Sadr (Ø§ÙØªØ´Ø§Ø±Ø§Øª Ø¯Ø§ÙØ´Ú¯Ø§Ù ÙØ±Ø¯ÙØ³Û Ù Ø´ÙØ¯)