If a muttaṣil hamzah is word-final and the reciter stops with iskān or ishmām, the book permits ṭūl on the temporary stopping cause in words such as يَشَاءُ، قُرُوءٌ، النَّسِيءُ; it does not allow qaṣr in this stated case.
With rawm, the source specifies tawassuṭ only. The stopping treatment of the final hamzah changes the ruling.
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Stopping at a final hamzah after connected madd
Madd Lengths and Permissible Combinations — Ṭūl, Tawassuṭ, Qaṣr and Consistency
If a muttaṣil hamzah is word-final and the reciter stops with iskān or ishmām, the book permits ṭūl on the temporary stopping cause in words such as يَشَاءُ، قُرُوءٌ، النَّسِيءُ; it does not allow qaṣr in this stated case.
With rawm, the source specifies tawassuṭ only. The stopping treatment of the final hamzah changes the ruling.