عَنْ أَنَسٍ
قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: إِذَا دَخَلَ الْخَلَاءَ نَزَعَ خَاتَمَهُ
When the Prophet (sallallahu alayhi wa sallam) entered the privy he took off his ring. Abu Dawud, Nasai and Tirmidhi transmitted it. Tirmidhi said this is a hasan sahih gharib tradition, and Abu Dawud said this is a rejected (munkar) tradition. His version has “laid down” instead of “took off”.
Mishkat al-Masabih 319, Book 4, Purification, Hadith 55. 1 min read