Rikhāwah refers to sound that can continue at the articulation point. After setting aside the eight shiddah letters and five tawassuṭ letters, sixteen letters are rikhāwah in the author's grouping.
Compare the flowing quality of سْ with the stoppage of تْ. Rikhāwah never licenses arbitrary elongation. Its character should remain perceptible without disturbing the measured flow of Qur’anic recitation.
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Rikhāwah: continued sound
Ṣifāt al-Ḥurūf — Opposing Qualities and Strength Grades
Rikhāwah refers to sound that can continue at the articulation point. After setting aside the eight shiddah letters and five tawassuṭ letters, sixteen letters are rikhāwah in the author's grouping.
Compare the flowing quality of سْ with the stoppage of تْ. Rikhāwah never licenses arbitrary elongation. Its character should remain perceptible without disturbing the measured flow of Qur’anic recitation.