It is narrated from Umm al-Mu'mineen Sayyida Aisha (may Allah be pleased with her) that when the Messenger of Allah (peace and blessings be upon him) would observe i'tikaf, he would bring his head close to me from (the door) and I would comb his hair, and he would not enter the house except for a human need.
Hadith Referenceالسنن المأثورة / باب ما جاء في الاعتكاف / 349
Hadith Takhrijصحیح بخاری، الاعتکاف، باب لا یدخل البیت الا لحاجۃ، رقم : 2029، صحیح مسلم، الحیض، باب جواز غسل الحائض رأس زوجہا و ترجیلہ، رقم : 297