The Messenger of Allah ﷺ said, "Whoever breaks his fast on a day of Ramadan without a valid concession, fasting for an entire lifetime will not make up for it."
حدثنا أبو بكر بن أبي شيبة وعلي بن محمد قالا حدثنا وكيع عن سفيان عن حبيب بن أبي ثابت عن ابن المطوس عن أبيه المطوس
قال رسول الله ﷺ من أفطر يوما من رمضان من غير رخصة لم يجزه صيام الدهر
Its chain is daif. Abu Dawud reported it in the Book of Fasting, in the chapter on the severity concerning one who breaks the fast deliberately, hadith no. 2396, from the hadith of Habib, through the same route. Tirmidhi reported it, hadith no. 723, and mentioned some remarks. Abu Mutaws is lenient in narration, and his father is unknown (Taqrib).