Narrated 'Abbad bin Tamim:
from his paternal uncle, that he saw the Prophet (ﷺ) reclining in the Masjid, and placing one of his feet atop another. (RU)
English reference (RU): Vol. 5, Book 41, Hadith 2765 (RU)
Arabic reference (RU): Book 43, Hadith 2992 (RU)