COMPENSATION FOR MISSING THE VOLUNTARY NIGHT PRAYER H 1204 "If the Messenger of Allah, praise and peace be upon him, missed his night pray through illness or its like, he offered twelve units of prayer during the day." R 1204 Muslim with a chain up to Lady Ayesha, the wife of the Prophet, may Allah be pleased with her, Mother of Believers who related this.
1181- وعنها رضي الله عنها ، قالت : كَانَ رسول الله صلى الله عليه وآله وسلم إِذَا فَاتَتْهُ الصَّلاةُ مِن اللَّيْلِ مِنْ وَجَعٍ أَوْ غَيْرِهِ ، صَلَّى مِنَ النَّهَارِ ثِنْتَيْ عَشرَةَ ركْعَةً . رواه مسلم .