Istiʿlāʾ is the raising of the back of the tongue toward the upper palate. Its seven letters are remembered by خُصَّ ضَغْطٍ قِظْ: خ ص ض غ ط ق ظ.
Compare قَ with كَ, or صَ with سَ. This is about a tongue posture, not shouting or producing an artificially harsh voice. The quality must be present without excessive physical force.
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Istiʿlāʾ: raising the back of the tongue
Ṣifāt al-Ḥurūf — Opposing Qualities and Strength Grades
Istiʿlāʾ is the raising of the back of the tongue toward the upper palate. Its seven letters are remembered by خُصَّ ضَغْطٍ قِظْ: خ ص ض غ ط ق ظ.
Compare قَ with كَ, or صَ with سَ. This is about a tongue posture, not shouting or producing an artificially harsh voice. The quality must be present without excessive physical force.