He said, "I swore by al-Lat and al-Uzza."His companions said to him, "You have spoken something abominable."So he went to the Prophet ﷺ and said, "My time in disbelief was recent, and I swore by al-Lat and al-Uzza."The Messenger of Allah ﷺ said, "Say, 'There is no god but Allah alone,' three times, then spit lightly to your left three times, seek refuge with Allah, and do not do it again."
حلفت باللات والعزى. فقال أصحابي: قد قلت هجرا، فأتيت النبي ﷺ فقلت: إن العهد كان قريبا، وإني حلفت باللات والعزى، فقال رسول الله ﷺ: قل: لا إله إلا الله وحده، ثلاثا، ثم انفث عن يسارك ثلاثا، وتعوذ ولا تعد.
Nasai (3776), Ibn Majah (2097), and Ahmad (1589) narrated it, and Ibn Hibban (4364) graded it sahih, all of them through various routes from Abu Ishaq Sabi, from Musab bin Saad, from his father Saad bin Abu Waqqas, who related it as mentioned.Its chain of transmission is sahih. Abu Ishaq Sabi is Amr bin Abdullah, who became confused in his memory before his death, but in some of its routes, Israil bin Yunus bin Abu Ishaq Sabi narrated it from him, and his narration from him is of the utmost soundness, since he heard from his grandfather before his confusion set in. He was followed in this narration by his father Yunus and by Zuhayr.The meaning of the hadith is that whoever swears by Lat and Uzza has effectively set up a partner alongside Allah, so he should correct this by saying, "There is no god but Allah alone," three times, and seek refuge in Allah from the accursed devil. By doing this, he will return to monotheism, and the devil's whispering will leave him.