Musnad Ahmad 1153:2283

'Ubaydah narrated to us, he said: Mansur narrated to me, from Ibrahim, from al-Aswad, from 'Aishah, she said: You have equated us with the dog and the donkey. The Messenger of Allah (peace and blessings of Allah be upon him) used to pray in the middle of the bed, while I was in my blanket. I would dislike to pass in front of him, so I would slip away from the direction of his feet.