رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1710
The Book of the Prohibited actions
Prohibition of Swearing in the name of anything besides Allah
وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : مَنْ حَلَفَ فَقَالَ: إِنِّي بَرِيءٌ مِنَ الإِسْلاَمِ، فَإِنْ كَانَ كَاذِبًا، فَهُوَ كَمَا قَالَ، وَإِنْ كَانَ صَادِقًا، فَلَنْ يَرْجِعَ إِلَى الإِسْلاَمِ سَالِمًا . ((رَوَاهُ أَبُو دَاوُد))
Buraidah (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "If anyone swears that in such and such case he will be free from Islam and afterwards he turns out to be a liar, he will be as he has sworn; but if he is speaking the truth, he will not revert safely to Islam." [Abu Dawud].
Riyad as-Salihin, 1710