(48) باب التَّسْمِيَةِ عَلَى الْوُضُوءِ
Narrated AbuHurayrah:
The Messenger of Allah (ﷺ) said: The prayer of a person who does not perform ablution is not valid, and the ablution of a person who does not mention the name of Allah (in the beginning) is not valid. (ID)
Reference (ID): Sunan Abi Dawud 101 (ID)
In-book reference (ID): Book 1, Hadith 101 (ID)
English translation (ID): Book 1, Hadith 101 (ID)