It is narrated from Abu Qatadah (may Allah be pleased with him) that when the Prophet (peace and blessings of Allah be upon him) camped at night, he would lie down on his right side, and when he camped shortly before morning, he would prop up his elbow and rest his head on his palm. Sahih, narrated in Sharh al-Sunnah.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 4716
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «صحيح، رواه البغوي في شرح السنة (325/12 ح 3359) [و مسلم (683) و الترمذي في الشمائل (259) و أحمد (309/5) ]»