Mukhtasar Bukhari

Umm al-Mu'mineen Aisha Siddiqa (may Allah be pleased with her) narrates that: Indeed, the Messenger of Allah (peace and blessings be upon him) would be performing prayer and I would be lying on my side on the bed in front of him. Then, when he intended to perform Witr, he would wake me up, so I would also perform Witr.