Izhar إظهار

The reason Izhar applies specifically before throat letters relates to the phonetic distance between the Noon's articulation point (tip of the tongue near the upper gum) and the throat letters' articulation points. Because these letters originate in the throat — far from where the Noon originates — there is no natural tendency for the Noon to assimilate into them. A clear, separate pronunciation is therefore both natural and required.

A second type, Izhar Mutlaq (absolute clarification), applies to specific instances in the Quran where Noon Sakinah is followed by Ya or Waw within the same word. Although these letters normally trigger Idgham when in separate words, within the same word Izhar is applied instead. The four examples in the Quran (dunya, bunyaan, sinwaan, qinwaan) are memorized by students as fixed exceptions to the general Idgham rule.

During Izhar, the Noon is pronounced with complete clarity — all nasal resonance is intentionally absent, the tongue articulates the Noon fully at its proper point, and the following throat letter is pronounced independently without any blending. This clean separation of sounds is the defining characteristic of Izhar and contrasts sharply with the blending of Idgham, the hiding of Ikhfa, and the conversion of Iqlab.

For beginners, Izhar is often the first of the four Noon Sakinah rules taught because it is the most intuitive — simply pronounce the Noon clearly. However, the challenge lies in correctly identifying which of the four rules applies in any given situation, requiring students to memorize the letters associated with each rule. Izhar's six letters (the throat letters) and Iqlab's single letter (Ba) are the easiest groups to memorize, making them ideal starting points.