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الْكَلَامُ كُلُّهُ اسْمٌ وَفِعْلٌ وَحَرْفٌ
It is reported that ʿAlī ibn Abī Ṭālib (may Allah be pleased with him) handed his student Abū al-Aswad a page that began: “All speech is noun, verb and particle.” Then he said: “Follow this path.” Grammar began as a way to protect the meaning of the Quran.