The Book of Zakat
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ وَهْبِ بْنِ مُنَبِّهٍ، عَنْ أَخِيهِ، هَمَّامٍ عَنْ مُعَاوِيَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تُلْحِفُوا فِي الْمَسْأَلَةِ فَوَاللَّهِ لاَ يَسْأَلُنِي أَحَدٌ مِنْكُمْ شَيْئًا فَتُخْرِجَ لَهُ مَسْأَلَتُهُ مِنِّي شَيْئًا وَأَنَا لَهُ كَارِهٌ فَيُبَارَكَ لَهُ فِيمَا أَعْطَيْتُهُ " .Mu'awiya reported Allah's Messenger (ﷺ) as saying:Do not press in a matter, for I swear by Allah, none of you who asks me for anything and manages to get his request while I disdain it, will he be blessed in that which I give him
From Sahih Muslim, whose reports the scholars accept as authentic.