It was narrated that Abu Umamah said, in a marfu' Hadith:"Adhere to righteousness and it is a blessing if you are able to do so. Know that the best of your deeds is prayer and that no one maintains his ablution except a believer
ReferencesSunan Ibn Majah 279In-book: Book 1, Hadith 13Source: hadith-api (fawazahmed0)