سنن النسائي

It was narrated that Abu Idris Al-Khawlani said: "I heard 'Ubadah bin As-Samit say: 'I pledged to the Messenger of Allah (ﷺ) among a group of people, and he said: I accept your pledge that you will not associate anything with Allah, you will not steal, you will not have unlawful sexual relations, you will not kill you children, you will not utter slander, fabricating from between your hands and feet, and you will not disobey me when commanded with goodness. Whoever fulfills (this pledge), his reward will be with Allah, and whoever commits any of these actions and is punished for it, it will be purification for him. Whoever (commits any of these action then) Allah conceals him, it is up to Allah; if He wills He will forgive him, and if He wills, He will punish him."'