Riyad as-Saliheen 820
'Abdullah bin Zaid (May Allah be pleased with them) reported:
I saw Messenger of Allah ﷺ lying down on his back in the mosque, placing one leg on the other.
[Al-Bukhari and Muslim].
عن عبد الله بن زيد رضى الله عنه أنه رأى رسول الله ﷺ مستلقياً في المسجد، واضعاً إحدى رجليه على الأخرى. .
Classification
Sahih (Authentic)
References
Riyad as-Saliheen 820
Riyad as-Saliheen Book of Etiquette of Sleeping, Lying and Sitting etc, Hadith 7