حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، عَنْ حُمَيْدِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَنْ حَلَفَ فَقَالَ فِي حَلِفِهِ وَاللاَّتِ فَلْيَقُلْ لاَ إِلَهَ إِلاَّ اللَّهُ وَمَنْ قَالَ لِصَاحِبِهِ تَعَالَ أُقَامِرْكَ فَلْيَتَصَدَّقْ بِشَىْءٍ ‏"‏ ‏.‏

Narrated Abu Hurairah: The Messenger of Allah (PBUH) as saying: If anyone swears on oath is the course which he says: "By al-Lat" he should say: There is no god but Allah, and that if anyone says to his friend: Come and let me play for money with you, he should give something in charity (sadaqah). Translation Not Available

Book reference: Sunan Abi Dawud Book 22 Hadith 3247
Web reference: Sunan Abi Dawud Book 21 Hadith 3241