Maliks Muwatta
Maliks Muwatta Book 019, Hadith Number 005.
Hadith Section/Book: Maliks Muwatta Maliks Muwatta Book 19. I'tikaf In Ramadhan
Section : Leaving Itikaf for the Id.
Yahya related to me that Ziyad ibn Abd ar-Rahman said, "Malik related to us from Sumayy, the mawla of Abu Bakr ibn Abd ar-Rahman, that Abu Bakr ibn Abd ar-Rahman was once doing itikaf and he would go out to relieve himself in a closed room under a roofed passage in Khalid ibn Walid's house. Otherwise he did not leave his place of itikaf until he went to pray at the Id with the muslims."
Yahya related to me that Ziyad ibn Abd ar-Rahman said, "Malik related to us from Sumayy, the mawla of Abu Bakr ibn Abd ar-Rahman, that Abu Bakr ibn Abd ar-Rahman was once doing itikaf and he would go out to relieve himself in a closed room under a roofed passage in Khalid ibn Walid's house. Otherwise he did not leave his place of itikaf until he went to pray at the Id with the muslims."