Sayyidah Aisha (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him) used to perform the Tahajjud prayer, and I would be lying on the bed between him and the Qiblah. When he (peace be upon him) wanted to perform Witr, he would wake me up as well, and I would also perform Witr.
Hadith Referenceالمنتقى ابن الجارود / كتاب الصلاة / 169