How did the Prophet, peace and blessings be upon him, sleep, and in what direction did he face his head and his face when he slept?

Al-Bukhari and others narrated from Al-Bara' bin Azib that when the Prophet, peace and blessings be upon him, went to his bed, he would sleep on his right side, then say: "O Allah, I surrender my soul to You, and I turn my face to You, and I entrust my affair to You, and I seek refuge in You with my back, out of hope in You and fear of You. There is no refuge and no escape from You except to You. I believe in Your Book which You have revealed, and in Your Prophet whom You have sent." And whoever says these words and dies, dies upon the fitra (natural disposition). There is no hadith (definition) that proves the Prophet, peace and blessings be upon him, faced the Qiblah in his sleep, but it is the best direction for whoever can manage it.