If:
then:
Example:
| يَوْعِدُ | → | يَعِدُ |
| يَوْجِدُ | → | يَجِدُ |
If:
then:
Example:
| يَوْهَبُ | → | يَهَبُ |
| يَوْسَعُ | → | يَسَعُ |
When a wāw or yāʾ falls in the ʿayn position of an active participle whose verb is muʿtal, it converts to hamzah.
When a maṣdar of the pattern faʿlūlah has a wāw as its ʿayn kalimah, the wāw is changed to a yāʾ.
Morphological rule: a ي in the lām position after a ḍammah converts to a و.
Rule for forming the maṣdar ʿidah from وَعْدٌ: drop the initial wāw, give the ʿayn al-kalimah a kasrah, and append tāʾ marbūṭah.
