The fifteenth point, jawf, refers to the open oral/pharyngeal cavity. It is assigned to the madd letters: alif following fatḥah; sākin wāw following ḍammah; and sākin yāʾ following kasrah.
Practice the elongated vowels ـَا، ـُو، ـِي. Their sound is not formed by one fixed tongue-to-teeth closure. The author's notes therefore call madd alif jawfī / hawāʾī and distinguish it from hamzah.
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Point 15: The cavity and madd letters
Makhārij al-Ḥurūf — The Fifteen Articulation Points
The fifteenth point, jawf, refers to the open oral/pharyngeal cavity. It is assigned to the madd letters: alif following fatḥah; sākin wāw following ḍammah; and sākin yāʾ following kasrah.
Practice the elongated vowels ـَا، ـُو، ـِي. Their sound is not formed by one fixed tongue-to-teeth closure. The author's notes therefore call madd alif jawfī / hawāʾī and distinguish it from hamzah.