Usually, placing the separate word لَا before an imperfect verb makes it negative.
● لَا يَكْتُبُ — he does not / will not write
● لَا تَنْصُرُ — you do not / will not help
● لَا يَنْصُرُ الْمُسْلِمُونَ الْكَافِرِينَ — the Muslims do not help the disbelievers
Here لَا is written separately; the person form of the verb remains recognizable.
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Negation and Time Markers with the Imperfect
Usually, placing the separate word لَا before an imperfect verb makes it negative.
● لَا يَكْتُبُ — he does not / will not write
● لَا تَنْصُرُ — you do not / will not help
● لَا يَنْصُرُ الْمُسْلِمُونَ الْكَافِرِينَ — the Muslims do not help the disbelievers
Here لَا is written separately; the person form of the verb remains recognizable.