His Majesty Sultan Haji Hassanal Bolkiah Mu’izzaddin Waddaulah ibni Al-Marhum Sultan Haji Omar ‘Ali Saifuddien Sa’adul Khairi Waddien, Sultan and Yang Di-Pertuan of Brunei Darussalam yesterday reminded Muslims on the obligation to be grateful while performing fasting blessed with sustenance and good health. “The challenge of performing fasting is not small. It requires patience at