If:
Then:
Example:
| قاوِلٌ | → | قائلٌ |
| بَايِعٌ | → | بَائِعٌ |
Morphological rule: a ي in the lām position after a ḍammah converts to a و.
When a wāw sits as the ʿayn kalimah of a maṣdar after a kasrah, or in a plural, it converts to a yāʾ if its verb takes the rules of taʿlīl.
Rule for dropping the wāw in muʿtal verbs of the يَعِدُ pattern when the sign of muḍāriʿ is maftūḥ and the ʿayn kalimah is maksūr.
When wāw or yāʾ falls at the end of a word after an alif zāʾidah, it is converted to a hamzah.
