'Abdullah said, "When a man is given an invitation, that is his permission to enter."  

عَنْ عَبْدِ اللهِ قَالَ إِذَا دُعِيَ الرَّجُلُ فَقَدْ أُذِنَ لَهُ  

Abu Hurayra reported that the Prophet, may Allah bless him and grant him peace, said, "When one of you gives someone an invitation and the person you invited comes with your messenger, that is his permission to enter."  

عَنِ النَّبِيِّ ﷺ قَالَ إِذَا دُعِيَ أَحَدُكُمْ فَجَاءَ مَعَ الرَّسُولِ فَهُوَ إِذْنُهُ  

Abu Hurayra reported that the Prophet, may Allah bless him and grant him peace, said, "A man's messenger to another man is his permission to enter."  

عَنِ النَّبِيِّ ﷺ قَالَ رَسُولُ الرَّجُلِ إِلَى الرَّجُلِ إِذْنُهُ  

Abu'l-'Alaniyya said, "I came to Abu Sa'id al-Khudri and greeted him, but he did not give me permission. Then I greeted him again and he did not give me permission. Then I greeted him a third time, raising my voice and said, 'Peace be upon you, people of the house,' and he did not give me permission. Then I went off to one side and sat down. A slave boy came out to me and said, 'Enter.' I entered and Abu Sa'id said to me, 'If you had said it any more times, I would not have given you permission.' I asked him about vessels (i.e. those used for wine) and other things. He said, 'Haram.' I asked him about an old milk-skin made into a bucket for fermentation purposes. 'Haram,' he said."  

عَنْ أَبِي الْعَلاَنِيَةِ قَالَ أَتَيْتُ أَبَا سَعِيدٍ الْخُدْرِيَّ فَسَلَّمْتُ فَلَمْ يُؤْذَنْ لِي ثُمَّ سَلَّمْتُ فَلَمْ يُؤْذَنْ لِي ثُمَّ سَلَّمْتُ الثَّالِثَةَ فَرَفَعْتُ صَوْتِي وَقُلْتُ السَّلاَمُ عَلَيْكُمْ يَا أَهْلَ الدَّارِ فَلَمْ يُؤْذَنْ لِي فَتَنَحَّيْتُ نَاحِيَةً فَقَعَدْتُ فَخَرَجَ إِلَيَّ غُلاَمٌ فَقَالَ ادْخُلْ فَدَخَلْتُ فَقَالَ لِي أَبُو سَعِيدٍ أَمَا إِنَّكَ لَوْ زِدْتَ لَمْ يُؤْذَنْ لَكَ فَسَأَلْتُهُ عَنِ الأَوْعِيَةِ فَلَمْ أَسْأَلْهُ عَنْ شَيْءٍ إِلاَّ قَالَ حَرَامٌ حَتَّى سَأَلْتُهُ عَنِ الْجَفِّ فَقَالَ حَرَامٌ فَقَالَ مُحَمَّدٌ يُتَّخَذُ عَلَى رَأْسِهِ إِدَمٌ فَيُوكَأُ