عَنْ عُرْوَةَ عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مُعْتَكِفًا وَكَانَ لَا يَدْخُلُ الْبَيْتَ إِلَّا لِحَاجَةِ الْإِنْسَانِ، قُلْتُ: فَغَسَلْتُ رَأْسَهُ وَإِنَّ بَيْنِي وَبَيْنَهُ عَتَبَةَ الْبَابِ
Sayyidah Aisha (may Allah be pleased with her) narrates that when the Messenger of Allah (peace and blessings be upon him) was in i'tikaf, he would not enter the house except for human necessity, and when I would wash his blessed head, there would be the threshold of the door between me and the Messenger of Allah (peace and blessings be upon him).