Hadith 8:2791
Abu Bakr narrated to us, he said: Jarir narrated to us, from Mughira, from Ibrahim, who said: It is disliked for a person to lean his back against the Kaaba while turning his back toward it.
حدثنا أبو بكر قال نا جرير عن مغيرة عن إبراهيم قال يكره أن يسند الإنسان ظهره إلى الكعبة يستدبرها