Mishkat al-Masabih
Mishkat al-Masabih 318
Arabic hadith text
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " إِنَّ الْوُضُوءَ عَلَى مَنْ نَامَ مُضْطَجِعًا فَإِنَّهُ إِذَا اضْطَجَعَ اسْتَرْخَتْ مفاصله. رَوَاهُ التِّرْمِذِيّ وَأَبُو دَاوُد
Translation
Ibn ʿAbbās reported that the Messenger of God said: ‘Ablution is required of one who sleeps lying down, because when he lies down his joints relax.’ Al-Tirmidhī and Abū Dāwūd transmitted it.
Translation notes
The accompanying grading labels this report weak.