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).  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا اعْتَكَفَ يُدْنِي إِلَىَّ رَأْسَهُ فَأُرَجِّلُهُ وَكَانَ لاَ يَدْخُلُ الْبَيْتَ إِلاَّ لِحَاجَةِ الإِنْسَانِ  

And Yunus also narrated in a similar way from al-Zuhri, and no one supported Malik in his narration from 'Urwah from 'Umrah ; and Ma'mar, Ziyad b. Sad and others have also narrated it from al-Zuhri from 'Urwah on the authority of 'Aishah.  

عَنِ النَّبِيِّ ﷺ نَحْوَهُ  

The Messenger of Allah ﷺ used to observe I'tikaf in the mosque and put his head near me through the opening of the apartment, and I would wash his head. Musaddad said: "And I would comb it while I was menstruating."  

كَانَ رَسُولُ اللَّهِ ﷺ يَكُونُ مُعْتَكِفًا فِي الْمَسْجِدِ فَيُنَاوِلُنِي رَأْسَهُ مِنْ خَلَلِ الْحُجْرَةِ فَأَغْسِلُ رَأْسَهُ وَقَالَ مُسَدَّدٌ فَأُرَجِّلُهُ وَأَنَا حَائِضٌ  

When the Messenger of Allah ﷺ was observing I'tikaf (in the mosque), I would come to him to visit him. I had a talk with him and then stood up. I then returned and he (the Prophet) also stood up to accompany me (to my house). Her dwelling place was in the house of Usamah b. Zaid. Two men from the Ansar (helpers) passed (by him at the moment). When they saw the Prophet ﷺ, they walked quickly. The Prophet ﷺ said: Be at ease, she is Safiyyah daughter of Huyayy. They said: Be glory to Allah, Messenger of Allah! He said: Satan runs in man like blood. I feared he might inspire something in your mind, or he said: evil (the narrator doubted).  

كَانَ رَسُولُ اللَّهِ ﷺ مُعْتَكِفًا فَأَتَيْتُهُ أَزُورُهُ لَيْلاً فَحَدَّثْتُهُ ثُمَّ قُمْتُ فَانْقَلَبْتُ فَقَامَ مَعِي لِيَقْلِبَنِي وَكَانَ مَسْكَنُهَا فِي دَارِ أُسَامَةَ بْنِ زَيْدٍ فَمَرَّ رَجُلاَنِ مِنَ الأَنْصَارِ فَلَمَّا رَأَيَا النَّبِيَّ ﷺ أَسْرَعَا فَقَالَ النَّبِيُّ ﷺ عَلَى رِسْلِكُمَا إِنَّهَا صَفِيَّةُ بِنْتُ حُيَىٍّ قَالاَ سُبْحَانَ اللَّهِ يَا رَسُولَ اللَّهِ قَالَ إِنَّ الشَّيْطَانَ يَجْرِي مِنَ الإِنْسَانِ مَجْرَى الدَّمِ فَخَشِيتُ أَنْ يَقْذِفَ فِي قُلُوبِكُمَا شَيْئًا أَوْ قَالَ شَرًّا  

The tradition mentioned above has also been transmitted by Al Zuhri through a different chain of narrators. In this version she said “When he was at the gate of the mosque which was near the gate of Umm Salamah, two men passed them. The narrator then transmitted the tradition to the same effect.  

حَتَّى إِذَا كَانَ عِنْدَ بَابِ الْمَسْجِدِ الَّذِي عِنْدَ بَابِ أُمِّ سَلَمَةَ مَرَّ بِهِمَا رَجُلاَنِ وَسَاقَ مَعْنَاهُ