Adding heavy nūn of emphasis to a prohibition makes it more forceful:
لَا تَقُولَنَّ — you must certainly not say.
لَا تُقَالَنَّ — you must certainly not be spoken of.
Light-nūn examples include لَا تَقُولَنْ and لَا تُقَالَنْ.
TypeActive, second masc singularPassive, second masc singular
Plainلَا تَقُلْلَا تُقَلْ
Heavy nūnلَا تَقُولَنَّلَا تُقَالَنَّ
Light nūnلَا تَقُولَنْلَا تُقَالَنْ
The six source-chart positions absent for light nūn should not be manufactured here either.
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Complete Conjugation of the Hollow Wāw Verb: Qāla–Yaqūlu
Adding heavy nūn of emphasis to a prohibition makes it more forceful:
لَا تَقُولَنَّ — you must certainly not say.
لَا تُقَالَنَّ — you must certainly not be spoken of.
Light-nūn examples include لَا تَقُولَنْ and لَا تُقَالَنْ.
TypeActive, second masc singularPassive, second masc singular
Plainلَا تَقُلْلَا تُقَلْ
Heavy nūnلَا تَقُولَنَّلَا تُقَالَنَّ
Light nūnلَا تَقُولَنْلَا تُقَالَنْ
The six source-chart positions absent for light nūn should not be manufactured here either.