Mutaqāribayn are different consonants with close, rather than identical, articulation positions. The source gives أَلَمْ نَخْلُقْكُمْ for qāf meeting kāf.
Contrast: identical consonant pairs are mithlayn; different letters with a shared articulation are mutajānisayn; nearby positions are mutaqāribayn. Whether assimilation actually occurs is a further question.
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Mutaqāribayn: neighboring sounds
Idghām: Types, Complete/Incomplete Assimilation and the Definite Article
Mutaqāribayn are different consonants with close, rather than identical, articulation positions. The source gives أَلَمْ نَخْلُقْكُمْ for qāf meeting kāf.
Contrast: identical consonant pairs are mithlayn; different letters with a shared articulation are mutajānisayn; nearby positions are mutaqāribayn. Whether assimilation actually occurs is a further question.