(41) باب فَضْلِ سَاقِي الْبَهَائِمِ الْمُحْتَرَمَةِ وَإِطْعَامِهَا
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
There was a dog moving around a well whom thirst would have killed. Suddenly a prostitute from the prostitutes of Bani Isra'il happened to see it and she drew water in her shoe and made it drink, and she was pardoned because of this.
Reference: Sahih Muslim 2245 b
In-book reference: Book 39, Hadith 212
USC-MSA web (English) reference(deprecated numbering scheme): Book 26, Hadith 5579