"Is Allah not sufficient for His servant?"—meaning: Muhammad; He suffices him against the polytheists so that they cannot reach him. "And they threaten you with those other than Him"—meaning: the idols.
Interpretation of Surah az-Zumar from verse 38 to verse 40.
﴿أَلَيْسَ الله بكاف عَبده﴾ يَعْنِي: مُحَمَّدًا؛ يَكْفِيهِ الْمُشْركين حَتَّى لَا يصلُوا إِلَيْهِ ﴿وَيُخَوِّفُونَكَ بِالَّذِينَ من دونه﴾ يَعْنِي: الْأَوْثَان.
تَفْسِير سُورَة الزمر من الْآيَة ٣٨ إِلَى آيَة ٤٠.