Hadithcore
Mishkat al-Masabih, 2244

Salman reported God’s messenger as saying, “Your Lord is munificent and generous, and is ashamed to turn away empty the hands of a servant when he raises them to Him .” Tirmidhi, Abu Dawud and Baihaqi, in <i>[Kitab] ad-Da'awat al-kabir</i>, transmitted it.

وَعَن سَلْمَانَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنَّ رَبَّكُمْ حَيِيٌّ كَرِيمٌ يَسْتَحْيِي مِنْ عَبْدِهِ إِذَا رَفَعَ يَدَيْهِ إِلَيْهِ أَنْ يَرُدَّهُمَا صِفْرًا» . رَوَاهُ التِّرْمِذِيُّ وَأَبُو دَاوُدَ وَالْبَيْهَقِيُّ فِي الدَّعوات الْكَبِير

References1 variant
In-Book Reference
Book 9, Hadith 20