223 – “Whoever keeps night watch for a single night in the cause of Allah will receive the reward of a thousand nights—fasting their days and standing in prayer during their nights.”
Reported by al-Nasāʾī, al-Tirmidhī, and Ibn Mājah on the authority of ʿUthmān.
Very weak: Daʿīf al-Jāmiʿ (5604), first edition.
Later graded fair: Ṣaḥīḥ al-Targhīb wa-l-Tarhīb (1224).

224 – “Whoever conceals his Muslim brother’s nakedness … Allah will disgrace him with it in his own house.”
Reported by Ibn Mājah from Ibn ʿAbbās.
Weak: Daʿīf al-Jāmiʿ (5623), first edition.
Later graded sound: Ṣaḥīḥ Ibn Mājah (2079).

225 – “Whoever becomes uncertain about his prayer should perform two prostrations after giving salām.”
Reported by Abū Dāwūd from ʿAbd Allah ibn Jaʿfar.
Weak: Daʿīf Abī Dāwūd (1033).
Later graded sound: Ṣaḥīḥ Abī Dāwūd, “al-Kitāb al-Kabīr” (945/M), Gharrās edition.