"And he is not a withholder of the unseen," meaning: revelation. "Of being a miser," who is stingy in delivering it to you. Some of them read it as (bi-ẓanīn) with a ẓāʾ, meaning: one who is accused (of lying).
﴿وَمَا هُوَ على الْغَيْب﴾ الْوَحْي ﴿بضنين﴾ بِبَخِيلٍ يَبْخَلُ عَلَيْكُمْ بِهِ، وَبَعْضُهُمْ يقْرَأ (بظنين) أَي: بمتهم