Yahya related to me from Malik from Ibn Shihab from Urwa ibn az- Zubayr from Amra bint Abd ar-Rahman that A'isha, the wife of the Prophet ﷺ said,"When the Messenger of Allah ﷺ did itikaf he would bring his head near to me and I would comb it. He would only go into the house to relieve himself."  

عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ أَنَّهَا قَالَتْ كَانَ رَسُولُ اللَّهِ ﷺ إِذَا اعْتَكَفَ يُدْنِي إِلَىَّ رَأْسَهُ فَأُرَجِّلُهُ وَكَانَ لاَ يَدْخُلُ الْبَيْتَ إِلاَّ لِحَاجَةِ الإِنْسَانِ  

When the Messenger of Allah ﷺ observed I'tikaf, he would put his head near me, and I would comb it. and he entered the house only to fulfill human needs (i.e. to urinate or to relieve himself). (Using translation from Abū Dāʾūd 2467)   

كَانَ رَسُولُ اللهِ ﷺ يُدْنِي إِلَيَّ رَأْسَهُفَأُرَجِّلُهُ وَأَنَا حَائِضٌ وَهُوَ مُعْتَكِفٌ وَكَانَ لَا يَدْخُلُ الْبَيْتَ إِلَّا لِحَاجَةِ الْإِنْسَانِ  

[Machine] The translation of the passage is: The Messenger of Allah ﷺ used to stay in the mosque as a retreat, and he would not enter his house except for a need. I (A'isha) said, "So I washed his head, and indeed the threshold was between me and him."  

كَانَ رَسُولُ اللهِ ﷺ إِذَا كَانَ مُعْتَكِفًا فِي الْمَسْجِدِ لَا يَدْخُلُ الْبَيْتَ إِلَّا لِحَاجَةٍ قَالَتْ فَغَسَلْتُ رَأْسَهُ وَإِنَّ بَيْنِي وَبَيْنَهُ الْعَتَبَةَ  

When the Messenger of Allah ﷺ observed I'tikaf, he would put his head near me, and I would comb it. and he entered the house only to fulfill human needs (i.e. to urinate or to relieve himself). (Using translation from Abū Dāʾūd 2467)  

أَنَّهَا قَالَتْ «كَانَ رَسُولُ اللَّهِ ﷺ إِذَا اعْتَكَفَ أَدْنَى إِلَيَّ رَأْسَهُ فَأُرَجِّلُهُ فَكَانَ لَا يَدْخُلُ الْبَيْتَ إِلَّا لِحَاجَةِ الْإِنْسَانِ»