Hadithcore
Sahih Muslim, 1038 a
sahih

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.

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 ‏

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References2 variants
In-Book Reference
Book 12, Hadith 127
USC-MSA web (English) reference
Book 5, Hadith 2258 (deprecated numbering scheme)
Sharh · explanationclick to expand
The Prophet (may Allah's peace and blessings be upon him) was keen to teach and educate the Muslims to be well-mannered and to ask for things with dignity in all matters. This is intended to keep the relationships between the Muslims good and free from such ill feelings as hatred, anger, and the like, which may exist due to importunate and persistent asking. In this Hadīth, the Prophet (may Allah's peace and blessings be upon him) directs us not to ask for something in an immoderate or importunate manner, needlessly and unjustifiably. Allah Almighty says: {They do not ask people importunately.} [Surat al-Baqarah: 273] Then, the Prophet (may Allah's peace and blessings be upon him) explained why he forbade importunate asking. So, the Prophet (may Allah's peace and blessings be upon him) swore in an emphatic way that if anyone importunately asks him for something and he grants his request, while the Prophet (may Allah's peace and blessings be upon him) is actually reluctant to give that thing to him, because he only gives it to him to avert his bad attitude, the result is that Allah Almighty will not bless him in what he has taken by persistent and importunate asking. This demonstrates the evil outcome of importunate asking. The Hadīths reported from the Prophet (may Allah's peace and blessings be upon him) indicate that blessing will exist in the given money if it is given willingly and taken kindly. It urges abstinence and kindness and prohibits asking for something without necessity..
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