Urwah bin Zubair and Sa'id bin al-Musayyib have narrated this: Lady Aisha (may Allah be pleased with her) informed them that the Prophet Muhammad (peace be upon him) used to observe i'tikaf during the last ten days of the month of Ramadan, until Allah caused him to pass away. After him, his wives also observed i'tikaf during these days. And the Sunnah for the person observing i'tikaf is: "He should only leave (the place of i'tikaf) for the fulfillment of necessary needs, he should not participate in funeral processions, nor visit the sick, he should not touch a woman nor have intercourse with her, and i'tikaf can only be observed in a mosque where congregational prayers are held, and the person observing i'tikaf should also be instructed to fast." According to one statement, these words of the narration: "The Sunnah for the person observing i'tikaf is," from here to the end of the narration, are not the words of the Prophet Muhammad (peace be upon him), but rather the words of (the narrator) al-Zuhri, who included them in the hadith itself, which caused this confusion. Allah knows best. The narrator named Hisham bin Sulayman did not mention this.