Narrated Abu Huraira: The Prophet said, "Whoever swears saying in his oath. 'By Al-Lat and Al'Uzza,' should say, 'None has the right to be worshipped but Allah; and whoever says to his friend, 'Come, let me gamble with you,' should give something in charity."
— Sahih Bukhari, Volume 8, Book 78: Oaths and Vows, Hadith #645
