Read hadith and know hadith yourself
Bismillahir rahmaanir raheem
Narrated ‘Aisha (R) : The prophet used to offer his night prayer while I was sleeping across in his bed . Whenever he intended to offer the Witr prayer , he used to wake me up and I would offer the Witr prayer too .
Narrated Ibn ‘Umar : The Prophet (S) used to offer prayers on his Rahila facing its direction by signals , but not the compulsory prayer . He also used to pray Witr on his Rahila .