Anas said that he was ten years old when the Messenger of Allah, may Allah bless him and grant him peace, came to Madina. He said, "My mothers decided that I would serve him and I served him for ten years. He died when I was twenty. I am the person who knows best about the business of the veil. The first instance that was revealed occurred when the Messenger of Allah, may Allah bless him and grant him peace, built a room for Zaynab bint Jahsh. He celebrated the wedding there, invited the people who came, ate and then left. A group remained with the Prophet, may Allah bless him and grant him peace. They stayed for a long time and then the Prophet (ﷺ) went out and I went out hoping that they would leave. He walked and I walked with him until he came to the threshold of 'A'isha's room. Then, thinking that they would have left, he returned and I returned with him. He went to Zaynab but they were still sitting there. He left again and I left with him until he once more reached the threshold of 'A'isha's room. When he thought that they would have gone, he went back again and I went back with him. This time they had indeed left. The Prophet, may Allah bless him and grant him peace, then put up a curtain between me and him, and the veil was revealed."

Tha'laba ibn Abi Malik al-Qurazi reported that he rode to 'Abdullah ibn Suwayd, one of the Banu Haritha ibn al-Harith, to ask him about the three times of nakedness. 'Abdullah used to observe these times. Tha'laba said, "'Abdullah asked, 'What do you want?' I replied, 'I want to observe them.' He said, 'When I take off my garment at midday, none of my family who have reached puberty comes to me without my permission unless I call them. Nor do they do that when it is Fajr until people know that I have prayed, nor when I have prayed 'Isha' and removed my clothes so that I can sleep.'"

'A'isha said, "I used to eat date and butter mixture with the Prophet, may Allah bless him and grant him peace. 'Umar visited and the Prophet invited him and he ate. 'Umar's hand touched my fingers and he said, 'Oh! If I were to be obeyed about you, no eye would ever see you!' Then the veil was revealed."

'Abdullah ibn 'Umar said, "When someone enters a house which is not lived in, he should say, 'Peace be upon the righteous slaves of Allah.'"

Muslim ibn Nadhir said, "A man asked Hudhayfa, 'Should I ask permission to enter where my mother is?' He replied, 'If you were not to ask her permission, you would see what you dislike.'"

Musa ibn Talha said, "I entered where my mother was with my father. He went in and I followed him. He turned and pushed me in the chest so that I fell on my bottom. Then he said, 'Will you enter without permission!'"

Jabir said, "A man should ask permission from his son and his mother, even if she is old, his brother, his sister and his father."

'Abdullah said, "A man asks permission of his father, his mother, his brother and his sister."

Regarding the person who asks for permission to enter before he gives the greeting, Abu Hurayra said, "He is not given permission until he has first given the greeting."

Abu Hurayra reported that the Prophet, may Allah bless him and grant him peace, said, "If a man looks into your house and you take some pebbles and gouge out his eye, there is no fault in you."

Anas said, "The Prophet, may Allah bless him and grant him peace, was standing in prayer and a man looked into his room. He took an arrow from his quiver and aimed it at his eyes."

Sahl ibn Sa'd told him that a man looked from a room through the door of the Prophet, may Allah bless him and grant him peace, while the Prophet, may Allah bless him and grant him peace, had a comb with which he was scratching his hair. When the Prophet, may Allah bless him and grant him peace, saw him, he said, "If I had known that you were looking at me, I would have stabbed you in the eye with this!"

The Prophet, may Allah bless him and grant him peace, said, "The ear is put in the place of the eye."

Anas said, "A man looked through a gap into the room of the Prophet, may Allah bless him and grant him peace, and the Messenger of Allah (ﷺ) aimed an arrow-head at him, and the man withdrew his head."

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

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."

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."

'Abdullah ibn Busr, the Companion of the Prophet, may Allah bless him and grant him peace, said that when the Prophet, may Allah bless him and grant him peace, came to a door when he wanted to ask permission to enter, he did not face it directly. He stood to the right or the left. If he was given permission, he went in. Otherwise he went away.

Mu'awiya ibn Hudayj said, "I came to 'Umar ibn al-Khattab, may Allah be pleased with him, and asked him for permission to enter. They told me, 'Stay where you are until he comes to you.' I sat down near his door." He continued, "'Umar came out to me, called for water and did wudu'. Then he wiped over his leather socks. I said, 'O Amir al'-Mu'minin, is this on account of urine?' He replied, 'On account of urine or other things.'"

Anas ibn Malik reported that people knocked on the door of the Prophet, may Allah bless him and grant him peace, using their fingernails.