ENOfficial
Abu Hurayra reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "If any of you makes an oath and swears in his oath by al-Lat and al-'Uzza should say, 'There is no god but Allah.' If any of you tells him companion, 'Come on, I will make a bet with you' should give sadaqa."
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، قَالَ: حَدَّثَنَا اللَّيْثُ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، أَخْبَرَنِي حُمَيْدُ بْنُ عَبْدِ الرَّحْمَنِ، أَنَّ أَبَا هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللهِ صلى الله عليه وسلم: مَنْ حَلَفَ مِنْكُمْ فَقَالَ فِي حَلِفِهِ: بِاللاَّتِ وَالْعُزَّى، فَلْيَقُلْ: لاَ إِلَهَ إِلاَّ اللَّهُ، وَمَنْ قَالَ لِصَاحِبِهِ: تَعَالَ أُقَامِرْكَ، فَلْيَتَصَدَّقْ.
sunnah.com