It is narrated from Hazrat Aisha (may Allah be pleased with her) that sometimes when the Prophet (peace and blessings be upon him) would pray at night, I would be lying in front of him, and when he wanted to pray Witr, he would pinch my feet and instruct me to move back.
Hadith Referenceمسند احمد / مسند النساء / 25489
Hadith Gradingحکم دارالسلام:إسناده حسن من أجل محمد بن عمرو