Prohibition of sleeping on a roof that has no parapet

It is narrated from Ali bin Umarah (may Allah have mercy on him) that a bed was spread for Sayyiduna Abu Ayyub al-Ansari (may Allah be pleased with him) on a wide, spacious roof. Then at some hour of the night he ordered it to be removed from there, so the bed was brought down, and he said: "I very nearly spent this night in a state in which no covenant of protection (from Allah Almighty) would have remained for me."
Imam Ahmad bin Mani' (may Allah have mercy on him) narrated this hadith in his Musnad, and the narrators of its chain are thiqat (trustworthy). This report reflects the legal ruling that forbids sleeping on a roof without a parapet, so that a person stays safe from falling and remains deserving of Allah's protection.

It is narrated from Sayyiduna Samurah bin Jundub (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever spends the night or sleeps on a roof that has no parapet or protective barrier around it, the covenant of Allah Almighty (that is, the promise of protection and safety) has ended for him; and whoever shoots arrows in the darkness of the night (thoughtlessly or without any target), the covenant is also absolved from him; and whoever boards the sea when it is in severe storm and turbulence, the covenant of Allah Almighty has also ended for him."
Imam al-Harith bin Abi Usamah recorded this hadith in his Musnad (Bughyat al-Bahith: 2813); Imam Ahmad and Imam al-Hakim also narrated it, and Allamah al-Albani declared it sahih (authentic) in 'Sahih al-Jami'' (6148).