كتاب الأمور المنهي عنها
Read the English translation first, with the original Arabic directly underneath.
Abu Hurairah (May Allah be pleased with him) said:
The Prophet (ﷺ) said, "He who takes an oath and involuntarily says: 'By Al-Lat and Al-'Uzza' should at once affirm: 'La ilaha illallah (there is no true god except Allah)', and he who says to his companion: 'Come let's gamble' should make expiation by giving something in charity." <b>[Al-Bukhari and Muslim]</b>.
وعن أبي هريرة رضي الله عنه عن النبي صلى الله عليه وسلم قال: “من حلف فقال في حلفه: باللات والعزى، فليقل: لا إله إلا الله، ومن قال لصاحبه: تعالى أقامرك فليتصدق" ((متفق عليه)).