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»  

The Prophet ﷺ said: If anyone breaks his fast one day in Ramadan without a concession granted to him by Allah, a perpetual fast will not atone for it. (Using translation from Abū Dāʾūd 2396)   

عَنِ النَّبِيِّ ﷺ قَالَ «مَنْ أَفْطَرَ يَوْمًا مِنْ رَمَضَانَ مِنْ غَيْرِ رُخْصَةٍ رَخَّصَهَا اللَّهُ لَهُ لَمْ يَقْضِ عَنْهُ صِيَامُ الدَّهْرِ»