Sunan Abu Dawud, hadith 21

حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ مُجَاهِدٍ، عَنِ ابْنِ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم بِمَعْنَاهُ قَالَ ‏"‏ كَانَ لاَ يَسْتَتِرُ مِنْ بَوْلِهِ ‏"‏ ‏.‏ وَقَالَ أَبُو مُعَاوِيَةَ ‏"‏ يَسْتَنْزِهُ ‏"‏ ‏.‏

Narrated Ibn 'Abbas: A tradition from the Prophet (sal Allaahu alayhi wa sallam ) conveying similar meaning. The version of Jarir has the wording : "he did not cover himself while urinating." The version of Abu Mu'awiyah has the wording: "he did not safeguard himself (from urine)