Sahih al-Bukhari 4614

Arabic

حَدَّثَنَا أَحْمَدُ بْنُ أَبِي رَجَاءٍ، حَدَّثَنَا النَّضْرُ، عَنْ هِشَامٍ، قَالَ أَخْبَرَنِي أَبِي، عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ أَبَاهَا، كَانَ لاَ يَحْنَثُ فِي يَمِينٍ حَتَّى أَنْزَلَ اللَّهُ كَفَّارَةَ الْيَمِينِ‏.‏ قَالَ أَبُو بَكْرٍ لاَ أَرَى يَمِينًا أُرَى غَيْرَهَا خَيْرًا مِنْهَا، إِلاَّ قَبِلْتُ رُخْصَةَ اللَّهِ، وَفَعَلْتُ الَّذِي هُوَ خَيْرٌ‏.‏

English translation

Narrated Aisha:That her father (Abu Bakr) never broke his oath till Allah revealed the order of the legal expiation for oath. Abu Bakr said, "If I ever take an oath (to do something) and later find that to do something else is better, then I accept Allah's permission and do that which is better, (and do the legal expiation for my oath)

Reference: Sahih al-Bukhari 4614, Book of Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)). English translation by Dr. Muhammad Muhsin Khan.