Jami' al-Tirmidhi — The Book on Vows and Oaths

That the Messenger of Allah (ﷺ) said: “Whoever among you swears, saying in his oath: ‘By Al-Lat! By Al-‘Uzza!’ Then let him say ‘La ilaha illa Allah’ And whoever says: ‘Come let me gamble with you!’ Then let him give in charity.”