In أَوْحَىٰ, the sākin wāw after fatḥah is a letter of līn. The final alif maqṣūrah is a natural madd.
«لَهَا» also ends in a natural alif madd. Not every long vowel is madd munfaṣil; the latter requires hamzah at the start of a separate following word.
Practice:
أَوْحَىٰ — wāw līn, then final alif madd.
لَهَا — natural alif madd.
وَمَا أَدْرَاكَ — separated alif madd followed by hamzah, so munfaṣil.
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Līn and natural madd
Al-Qāriʿah and Az-Zalzalah — Comparative Tajwīd Practice
In أَوْحَىٰ, the sākin wāw after fatḥah is a letter of līn. The final alif maqṣūrah is a natural madd.
«لَهَا» also ends in a natural alif madd. Not every long vowel is madd munfaṣil; the latter requires hamzah at the start of a separate following word.
Practice:
أَوْحَىٰ — wāw līn, then final alif madd.
لَهَا — natural alif madd.
وَمَا أَدْرَاكَ — separated alif madd followed by hamzah, so munfaṣil.