عَنْ أَبِي هُرَيْرَةَ
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا تَحْلِفُوا بِآبَائِكُمْ وَلَا بِأُمَّهَاتِكُمْ وَلَا بِالْأَنْدَادِ وَلَا تَحْلِفُوا بِاللَّهِ إِلَّا وَأَنْتُمْ صَادِقُونَ»
Abu Hurayrah reported God’s Messenger as saying, “Do not swear by your fathers, or by your mothers, or by rivals (Cf. Al-Qur’an 2:22 etc. The reference is to idols or false gods) to God; and swear by God only when you are speaking the truth.” Abu Dawud and Nasai transmitted it.
Mishkat al-Masabih 3285, Book 16, Oaths and Vows, Hadith 13. 1 min read