Hadith 315
Mishkat al-Masabih
Purification · Circumstances which make ablution necessary - Section 2
Arabic
وَعَن مُعَاوِيَة بن أبي سُفْيَان أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: قَالَ: «إِنَّمَا الْعَيْنَانِ وِكَاءُ السَّهِ فَإِذَا نَامَتِ الْعَيْنُ اسْتطْلقَ الوكاء» . رَوَاهُ الدِّرَامِي
English translation
Mu'awiya b. Abu Sufyan reported the Prophet (ﷺ) as saying, “The eyes are the leather strap of the anus, and when the eye sleeps the leather strap is loosened.” Darimi transmitted it.