For a suitable final ḍammah, such as نَسْتَعِينُ under the stated conditions, the source counts seven options: three lengths with iskān, three with ishmām, and qaṣr with rawm.
Remember the grouping: 3 + 3 + 1 = 7. Rawm is a slight audible vowel, unlike the non-vocal lip indication of ishmām.
Opening interactive controls...
Seven options at a suitable ḍammah ending
Madd Lengths and Permissible Combinations — Ṭūl, Tawassuṭ, Qaṣr and Consistency
For a suitable final ḍammah, such as نَسْتَعِينُ under the stated conditions, the source counts seven options: three lengths with iskān, three with ishmām, and qaṣr with rawm.
Remember the grouping: 3 + 3 + 1 = 7. Rawm is a slight audible vowel, unlike the non-vocal lip indication of ishmām.