(7) باب قضاء الحاجة
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].
Reference: Bulugh al-Maram 93
In-book reference: Book 1, Hadith 111
English translation: Book 1, Hadith 99