PERSISTENT ASKING H 529 "Do not ask persistently. If I were to be asked for something and gave it reluctantly, there is no blessing in what I gave because of the manner in which it was asked." R 529 Muslim with a chain up to Abu Sufyan who related that the Prophet, praise and peace be upon him, said this.
527- وعن أَبي عبد الرحمان معاوية بن أبي سفيان رضي الله عنه ، قَالَ : قَالَ رسول الله صلى الله عليه وآله وسلم : "لاَ تُلْحِفُوا في الْمَسْأَلَةِ ، فَوَاللهِ لاَ يَسْأَلُنِي أَحَدٌ مِنْكُمْ شَيْئاً ، فَتُخْرِجَ لَهُ مَسْأَلَتُهُ مِنِّي شَيْئاً وَأنَا لَهُ كَارهٌ ، فَيُبَارَكَ لَهُ فِيمَا أعْطَيْتُهُ" رواه مسلم .