Surah Muhammad — Ayah 37 (47:37)
إِن يَسۡـَٔلۡكُمُوهَا فَيُحۡفِكُمۡ تَبۡخَلُواْ وَيُخۡرِجۡ أَضۡغَٰنَكُمۡ ٣٧
English translation (Saheeh International)
If He should ask you for them and press you, you would withhold, and He would expose your hatred [i.e., unwillingness].
Brief commentary
If He had to ask you for all of your wealth and insist in this request from you, you will become miserly with it, and He will bring out the greed and miserliness in your hearts. Thus that fact He is not asking it from you is out of kindness.