Tajweed RulesThat the hamzah precedes a letter of madd within a single word; its origin is two hamzahs, the second of which was replaced with a letter of madd. Its ruling is permissibility, and according to Hafs it is prolonged for the duration of two harakahs.
آمَنُوا — إِيمَانًا — أُوتُوا — آدَمَSource:تحفة الأطفال

