عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ مَنْ حَلَفَ فَقَالَ فِي حَلْفِهِ وَاللَّاتِ فَلْيَقُلْ لَا إِلَهَ إِلَّا اللَّهُ وَمَنْ قَالَ لِصَاحِبِهِ تَعَالَ أُقَامِرْكَ فَلْيَتَصَدَّقْ بِشَيْءٍ
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: Whoever swears an oath and in his oath says, "By al-Lat," then he should say (to atone for this mistake): "La ilaha illallah" (There is no god but Allah), and whoever says to his companion, "Come, let us gamble," he should give some charity.