Allah is too Shy to leave a duʿāʾ not having been responded to

The Prophet ﷺ said: Your Lord is munificent and generous, and is ashamed to turn away empty the hands of His servant when he raises them to Him.

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ رَبَّكُمْ تَبَارَكَ وَتَعَالَى حَيِيٌّ كَرِيمٌ يَسْتَحْيِي مِنْ عَبْدِهِ إِذَا رَفَعَ يَدَيْهِ إِلَيْهِ أَنْ يَرُدَّهُمَا صِفْرًا