Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever swears an oath and mentions the names of al-Lat and al-Uzza should say 'La ilaha illallah' (There is no deity worthy of worship except Allah), and whoever says to someone, 'Come, let us gamble,' should give charity."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 683
Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrated from the Prophet (peace and blessings be upon him): "Whoever swears by al-Lat and al-Uzza should say 'La ilaha illallah' (There is no deity except Allah)." Ibn Shihab (may Allah have mercy on him) said: It has not reached me that he (peace and blessings be upon him) also mentioned ablution in this.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 684