Hadith 3275

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيل ، حَدَّثَنَا حَمَّادٌ ، أَخْبَرَنَا عَطَاءُ بْنُ السَّائِبِ ، عَنْ أَبِي يَحْيَى ، عَنِ ابْنِ عَبَّاسٍ : " أَنَّ رَجُلَيْنِ اخْتَصَمَا إِلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، فَسَأَلَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الطَّالِبَ الْبَيِّنَةَ ، فَلَمْ تَكُنْ لَهُ بَيِّنَةٌ ، فَاسْتَحْلَفَ الْمَطْلُوبَ ، فَحَلَفَ بِاللَّهِ الَّذِي لَا إِلَهَ إِلَّا هُوَ ، فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : بَلَى ، قَدْ فَعَلْتَ ، وَلَكِنْ قَدْ غُفِرَ لَكَ بِإِخْلَاصِ قَوْلِ لَا إِلَهَ إِلَّا اللَّهُ " ، قَالَ أَبُو دَاوُد : يُرَادُ مِنْ هَذَا الْحَدِيثِ أَنَّهُ لَمْ يَأْمُرْهُ بِالْكَفَّارَةِ .
Narrated Abdullah ibn Abbas: Two men brought their dispute to the Prophet ﷺ. The Prophet ﷺ asked the plaintiff to produce evidence, but he had no evidence. So he asked the defendant to swear. He swore by Allah "There is no god but He. " The Messenger of Allah ﷺ said: Yes, you have done it, but you have been forgiven for the sincerity of the statement: "There is no god but Allah. " Abu Dawud said: This tradition means that he did not command him to make atonement
Hadith Reference سنن ابي داود / كتاب الأيمان والنذور / 3275
Hadith Grading الألبانی: صحيح  |  زبیر علی زئی: إسناده حسن
Hadith Takhrij « تفرد بہ أبوداود، (تحفة الأشراف: 5431)، وقد أخرجہ: مسند احمد (1/253، 288، 296، 322، 2/70) ویأتی ہذا الحدیث فی الأقضیة (3620) (صحیح) »
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:

A false oath is called "yamin ghamus."
That is, it is counted among the major sins (kabair) that plunge a person into sin and destruction, and there is no financial expiation (kafarah) for it.
The punishment of religion and the Hereafter is a very great penalty.
However, repentance (tawbah), remorse, and a firm resolve not to do so again in the future are its only expiation.

On the basis of this particular incident, no Muslim should dare to swear a false oath.

The Prophet Muhammad (sallallahu alayhi wa sallam) came to know through revelation (wahy) that he had sworn a false oath.
Therefore, he (sallallahu alayhi wa sallam) mentioned his falsehood with complete certainty.
In addition, he also explained how to make amends for it.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 3275