the Messenger of Allah said: "Whoever breaks the fast during Ramadan without an allowance or illness, then if he fasted for all time, his fasting would not make up for it." (Using translation from Tirmidhī 723)
قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ أَفْطَرَ يَوْمًا مِنْ شَهْرِ رَمَضَانَ مِنْ غَيْرِ رُخْصَةٍ وَلَا مَرَضٍ فَلَنْ يَقْضِيَهُ صِيَامُ الدَّهْرِ كُلِّهِ وَلَوْ صَامَ الدَّهْرَ»