عن عبد الرحمن بن عوف قال قال رسول الله صلى الله عليه وسلم إن الله تبارك وتعالى فرض صيام رمضان عليكم وسننت لكم قيامه فمن صامه وقامه إيمانا واحتسابا خرج من ذنوبه كيوم ولدته أمه

رواه النسائي:٢٢٠٩

‘Abdur Rahman ibn ‘Auf (r) narrates that the Messenger of Allah (s) said, “Indeed, Allah, the Exalted and Almighty, has made the fast of Ramadan obligatory upon you and I have made the nightly prayers of Ramadan a Sunnah for you. So, whoever fasts in Ramadan and offers this prayer at night, with firm belief in the promises of Allah, seeking only to please Him, and hoping for reward, will be cleansed from his sins like the day his mother gave birth to him.” (Nasai, 2209)