If:
Then:
Example:
| وَوَاصِلُ | → | أَوَاصِلُ |
| وُوَيْصِلٌ | → | أُوَيْصِلٌ |
When a wāw carries ḍammah or kasrah at the start of a word, or ḍammah in the middle, it may be replaced by a hamzah.
When wāw or yāʾ falls at the end of a word after an alif zāʾidah, it is converted to a hamzah.
When a wāw or yāʾ falls in the ʿayn position of an active participle whose verb is muʿtal, it converts to hamzah.
When the fāʾ of iftiʿāl is an original wāw or yāʾ, change it to tāʾ and assimilate with the tāʾ of iftiʿāl.
