وعن أبي قتادة
رضي الله عنه، قال: كان رسول الله صلى الله عليه وسلم، إذا كان في سفر، فعرس بليل اضطجع علي يمينه وإذا عرس قبيل الصبح نصب ذراعه، ووضع رأسه علي كفه
When the Messenger of Allah (sallallahu alayhi wa sallam) encamped at night during a journey, he would lie down on his right side, and when he stayed a little before dawn he would raise his forearm and place his head on the palm of his hand.
Riyad as-Salihin 963, Book 8, The Book of Etiquette of Traveling, Hadith 8. 1 min read