Narrated Thabit bin Adh-Dahhak: That he took oath of allegiance to the Messenger of Allah ﷺ under the tree. The Messenger of Allah ﷺ said: If anyone swears by religion other than Islam falsely, he is like what has has said. If anyone kills himself with something, he will be punished with it on the Day of Resurrection. A vow over which a man has no control is not binding on him.
Hadith Referenceسنن ابي داود / كتاب الأيمان والنذور / 3257
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (4171) صحيح مسلم (110)
Narrated Buraydah ibn al-Hasib: The Prophet ﷺ said: If anyone takes an oath and says: I am free from Islam; now if he is a liar (in his oath), he will not return to Islam with soundness.
Hadith Referenceسنن ابي داود / كتاب الأيمان والنذور / 3258
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده حسن, مشكوة المصابيح (3421), أخرجه النسائي (3803 وسنده حسن) وابن ماجه (2100 وسنده حسن)
Hadith Takhrij« سنن النسائی/الأیمان 7 (3803)، سنن ابن ماجہ/الکفارات 3 (2100)، (تحفة الأشراف: 1959)، وقد أخرجہ: مسند احمد (5/355، 356) (صحیح) »