KUANTAN, March 7 (Bernama) -- The Sultan of Pahang, Al-Sultan Abdullah Ri’ayatuddin Al-Mustafa Billah Shah, and Tengku Ampuan Pahang, Tunku Azizah Aminah Maimunah Iskandariah, urged Muslims to make the Quran their guiding principle in nurturing knowledge, integrity, and good character in all aspects of life.