وَهَذَا الْقِسْمُ لَا يَصِيرُ مُعْرَبًا أَصْلًا.
Translation: This second class—the inherently indeclinable form—does not become declinable.
This applies to the inherently indeclinable class, not the isolated “Zayd” mentioned earlier, which becomes declinable in a sentence.
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The indeclinable noun: definition, rule and eight classes
وَهَذَا الْقِسْمُ لَا يَصِيرُ مُعْرَبًا أَصْلًا.
Translation: This second class—the inherently indeclinable form—does not become declinable.
This applies to the inherently indeclinable class, not the isolated “Zayd” mentioned earlier, which becomes declinable in a sentence.