If a man is invited, should he ask permission to enter
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا عُمَرُ بْنُ ذَرٍّ،. وَحَدَّثَنَا مُحَمَّدُ بْنُ مُقَاتِلٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا عُمَرُ بْنُ ذَرٍّ، أَخْبَرَنَا مُجَاهِدٌ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ دَخَلْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَوَجَدَ لَبَنًا فِي قَدَحٍ فَقَالَ " أَبَا هِرٍّ الْحَقْ أَهْلَ الصُّفَّةِ فَادْعُهُمْ إِلَىَّ ". قَالَ فَأَتَيْتُهُمْ فَدَعَوْتُهُمْ، فَأَقْبَلُوا فَاسْتَأْذَنُوا فَأُذِنَ لَهُمْ، فَدَخَلُوا.
Narrated Abu Huraira: I entered (the house) along with Allah's Messenger (ﷺ) . There he found milk in a basin. He said, "O Abu Hirr! Go and call the people of Suffa to me." I went to them and invited them. They came and asked permission to enter, and when it was given, they entered. (See Hadith No. 459 for details)