Tajweed RulesThat a hamzah comes after a letter of madd within a single word; its ruling is obligatory, and it is prolonged for four or five harakahs whether continuing (wasl) or pausing (waqf), and six when pausing if the hamzah is at the end of the word.
جَاءَ — السَّمَاءِ — سُوءَ — جِيءَSource:تحفة الأطفال

