Rule applicable to the māḍī majhūl scales from جمع المؤنث الغائب onwards only.
If:
Then:
Example:
| قُوِلْنَ | → | قُلْنَ |
| قُوِلْتَ | → | قُلْتَ |
| قُوِلْتُمَا | → | قُلْتُمَا |
| قُوِلْتُمْ | → | قُلْتُمْ |
| قُوِلْتِ | → | قُلْتِ |
| قُوِلْتُمَا | → | قُلْتُمَا |
| قُوِلْتُنَّ | → | قُلْتُنَّ |
| قُوِلْتُ | → | قُلْتُ |
| قُوِلْنَا | → | قُلْنَا |
Likewise, the māḍī majhūl scale for طال is:
طُوْلَ, طُوْلَا, طُوْلُوْا, طُوْلَتْ, طُوْلَتَا, طُلْنَ, طُلْتَ، طُلْتُمَا، طُلْتُمْ، طُلْتِ، طُلْتُمَا، طُلْتُنَّ، طُلْتُ، طُلْنَا
If:
Then:
Example:
| خُيِفْنَ | → | خِفْنَ |
| خُيِفْتَ | → | خِفْتَ |
| خُيِفْتُمَا | → | خِفْتُمَا |
| خُيِفْتُمْ | → | خِفْتُمْ |
| خُيِفْتِ | → | خِفْتِ |
| خُيِفْتُمَا | → | خِفْتُمَا |
| خُيِفْتُنَّ | → | خِفْتُنَّ |
| خُيِفْتُ | → | خِفْتُ |
| خُيِفْنَا | → | خِفْنَا |
Likewise, the māḍī majhūl scale for باع is: بُوْعَ، بُوْعَا، بُوْعُوْا، بُوْعَتْ، بُوْعَتَا، بِعْنَ، بِعْتَ، بِعْتُمَا، بِعْتُمْ، بِعْتِ، بِعْتُمَا، بِعْتُنَّ، بِعْتُ، بِعْنَا
Forming the passive past (_māḍī majhūl_) of hollow verbs whose middle radical is _wāw_ or _yāʾ_, with the optional _ishmām_ pronunciation.
Rule for forming the maṣdar ʿidah from وَعْدٌ: drop the initial wāw, give the ʿayn al-kalimah a kasrah, and append tāʾ marbūṭah.
When wāw and yāʾ combine in one word under set conditions, the wāw becomes yāʾ and the two merge with tashdīd.
When a wāw or yāʾ is preceded by a sākin, swap their ḥarakāt; transformations, exceptions, and the alif-drop rule for verbs like yaqūlu and yabīʿu.
