It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade a man from placing one of his legs over the other while lying down. This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade ishtimal al-samma' (wrapping the whole body in a single sheet in such a way that the hands cannot come out), and also forbade a man from lying flat on his back and raising one of his legs over the other.

Amr bin al-Sharid narrates from his father that the Prophet (peace and blessings be upon him) passed by him while he was sitting leaning on the palm of his (left) hand, which he had placed behind his back, and he (peace and blessings be upon him) said: "Do you sit the way those who have incurred (Allah's) anger sit?" This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.