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."