Sahih Muslim Book - 16, Hadith - 3508

وَحَدَّثَنِى مُحَمَّدُ بْنُ رَافِعٍ حَدَّثَنَا عَبْدُ الرَّزَّاقِ حَدَّثَنَا مَعْمَرٌ عَنْ أَبِى عُثْمَانَ عَنْ أَنَسٍ قَالَ لَمَّا تَزَوَّجَ النَّبِىُّ -صلى الله عليه وسلم- زَيْنَبَ أَهْدَتْ لَهُ أُمُّ سُلَيْمٍ حَيْسًا فِى تَوْرٍ مِنْ حِجَارَةٍ فَقَالَ أَنَسٌ فَقَالَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- « اذْهَبْ فَادْعُ لِى مَنْ لَقِيتَ مِنَ الْمُسْلِمِينَ ». فَدَعَوْتُ لَهُ مَنْ لَقِيتُ فَجَعَلُوا يَدْخُلُونَ عَلَيْهِ فَيَأْكُلُونَ وَيَخْرُجُونَ وَوَضَعَ النَّبِىُّ -صلى الله عليه وسلم- يَدَهُ عَلَى الطَّعَامِ فَدَعَا فِيهِ وَقَالَ فِيهِ مَا شَاءَ اللَّهُ أَنْ يَقُولَ وَلَمْ أَدَعْ أَحَدًا لَقِيتُهُ إِلاَّ دَعَوْتُهُ فَأَكَلُوا حَتَّى شَبِعُوا وَخَرَجُوا وَبَقِىَ طَائِفَةٌ مِنْهُمْ فَأَطَالُوا عَلَيْهِ الْحَدِيثَ فَجَعَلَ النَّبِىُّ -صلى الله عليه وسلم- يَسْتَحْيِى مِنْهُمْ أَنْ يَقُولَ لَهُمْ شَيْئًا فَخَرَجَ وَتَرَكَهُمْ فِى الْبَيْتِ فَأَنْزَلَ اللَّهُ عَزَّ وَجَلَّ (يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَدْخُلُوا بُيُوتَ النَّبِىِّ إِلاَّ أَنْ يُؤْذَنَ لَكُمْ إِلَى طَعَامٍ غَيْرَ نَاظِرِينَ إِنَاهُ) قَالَ قَتَادَةُ غَيْرَ مُتَحَيِّنِينَ طَعَامًا وَلَكِنْ إِذَا دُعِيتُمْ فَادْخُلُوا حَتَّى بَلَغَ (ذَلِكُمْ أَطْهَرُ لِقُلُوبِكُمْ وَقُلُوبِهِنَّ)

It was narrated that Anas said: "When the Prophet (s.a.w) married Zainab, Umm Sulaim gave him a gift of some Hais in a stone vessel. "Anas said: "The Prophet (s.a.w) said: 'Go and invite for me whoever you meet of the Muslims.' So I invited for him whomever I met. They started coming in, eating, and leaving, and the Prophet (s,a.w) kept his hand on that food and prayed for blessing for it, saying whatever Allah willed he should say. I did not leave anyone whom I met but I invited him, and they ate their fill and left, but a few of them stayed behind and chatted at length. The Prophet (s.a.w) felt too shy to say anything to them, so he went out and left them in the house. Then Allah [Most High] revealed the words: "O you who believe! Enter not the Prophet's houses, unless permission is given to you for a meal, (and then) not (so early as) to wait for its preparation." - Qatadah said: "Not waiting for the time for food.'' - "But when you are invited, enter" until he reached "that is purer for your hearts and for their hearts.''