اُنْصُرْ — اُكْتُبْ
In regular Form I imperatives with an underlying ḍamma on the third letter, hamzat al-waṣl takes ḍamma: unṣur, uktub.
Opening interactive controls...
When Waṣl Hamza Takes Ḍamma
The Imperative: Definition, Formation, Hamza, and Building Signs
اُنْصُرْ — اُكْتُبْ
In regular Form I imperatives with an underlying ḍamma on the third letter, hamzat al-waṣl takes ḍamma: unṣur, uktub.