The Manners of Answering the Call of Nature Bulugh al-Maram 93
Arabic hadith text
وَلِأَحْمَدَ; عَنِ ابْنِ عَبَّاسٍ: { أَوْ نَقْعِ مَاءٍ } وَفِيهِمَا ضَعْف ٌ 1 .1 - ضعيف. رواه أحمد (2715).
Translation
Ahmad reported from Ibn Abbas (rad) that defecation is prohibited also at the place where water collects. [And both the two (i.e. the previous and this Hadiths) have weakness].