The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, then said: "Water does not become impure if something dies in it unless it is a creature with flowing blood. If a fly, wasp, locust, or similar creature - something without flowing blood - dies in the water, it does not render it impure." Since it is established, based on the Quranic verse and narrations, that the default ruling for water is purity and its use is permitted, any prohibition on its use requires specific evidence. For creatures without flowing blood, there is no definitive ruling in the Sharia prohibiting the use of water they fall into. Thus, the default ruling remains applicable. This is supported by the previously mentioned narration from Uthman, from Sama‘ah, from Abu Abdullah عليه السلام, and other evidence as well.
Commentary #20