يَرْضَيَانِ → لَنْ يَرْضَيَا
Translation: The two are pleased → The two will not be pleased.
يَرْضَوْنَ → لَنْ يَرْضَوْا
Translation: They (masc.) are pleased → They will not be pleased.
The removed nūn marks the indicative in the five-verb forms. Contrast يَرْضَيْنَ → لَنْ يَرْضَيْنَ: its nūn is the feminine plural pronoun (nūn al-niswah), not the removable indicative nūn.
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Which Nūn Disappears in the Subjunctive?
Full Conjugation of the Wāw-Final Verb رَضِيَ يَرْضَى
يَرْضَيَانِ → لَنْ يَرْضَيَا
Translation: The two are pleased → The two will not be pleased.
يَرْضَوْنَ → لَنْ يَرْضَوْا
Translation: They (masc.) are pleased → They will not be pleased.
The removed nūn marks the indicative in the five-verb forms. Contrast يَرْضَيْنَ → لَنْ يَرْضَيْنَ: its nūn is the feminine plural pronoun (nūn al-niswah), not the removable indicative nūn.