Sayyidah Aishah (may Allah be pleased with her) said that the Messenger of Allah (peace and blessings be upon him) would pray his night prayer while I lay between him (peace and blessings be upon him) and the qiblah. When he (peace and blessings be upon him) intended to pray witr, he would nudge me with his foot. And he (peace and blessings be upon him) would pray two rak'ahs; if I was awake he would talk with me, otherwise he would remain lying down until he went to the prayer.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4893