Sahih Muslim, 4271

Abu Huraira reported:A person sat late in the night with Allah's Apostle (ﷺ), and then came to his family and found that his children had gone to sleep. His wife brought food for him. but he took an oath that he would not eat because of his children (having gone to sleep without food) He then gave precedence (of breaking the vow and then expiating it) and ate the food He then came to Allah s Messenger (ﷺ) and made mention of that to him, whereupon Allah's Messenger (may peace he upon him) said: He who took an oath and (later on) found something better than that should do that, and expiate for (breaking) his vow

Rapporté par Abu Huraira رضي الله عنه : Un homme est resté tard le soir avec le Messager d’Allah ﷺ, puis il est rentré chez lui et a trouvé ses enfants endormis. Sa femme lui a apporté à manger, mais il a juré de ne pas manger parce que ses enfants s’étaient couchés sans avoir mangé. Il a ensuite décidé de rompre son serment, a expié et a mangé la nourriture. Il est allé voir le Messager d’Allah ﷺ pour lui raconter cela. Le Prophète ﷺ a dit : « Celui qui fait un serment et trouve ensuite quelque chose de meilleur doit faire ce qui est mieux et expier son serment. »