Allah would not forgive such and such (person). Thereupon Allah the Exalted and Glorious, said: Who is he who adjures about Me that I would not grant pardon to so and so; I have granted pardon to so and so and blotted out his deeds (who took an oath that I would not grant pardon to him).
Sahih Muslim Book 45, Hadith 178
← Previous Hadith Allah, the Exalted and Glorious, said: Glory is His lower garment and Majesty is His cloak and (Allah says, ) He who contends with Me in regard to them I shall torment him.

Sahih Muslim Book 45, Hadith 177 Next Hadith → Many a person with disheveled hair and covered with dust is turned away from the doors (whereas he is held in such a high esteem by Allah) that if he were to adjure in the name of Allah (about anything) Allah would fulfil that.

Sahih Muslim Book 45, Hadith 179