The ruling on one who breaks his fast for days of Ramadan during his days of heedlessness?

Question : What is the ruling on one who was astray and left fasting days of Ramadan for years, and does not know their number, knowing that he was praying, and now Allah has guided him, and he wants to know how to fulfill what is due from him?

Answer : We tell him that it is not obligatory for him to make up the fasting he left. Not as a concession for him, but as a punishment for him.
Do you understand? We tell this one who left days of Ramadan, or multiple Ramadans, we say: do not make them up as long as Allah has granted you guidance. Do not make them up as a concession for him, or as a punishment for him?
The second is a punishment for him, because he left what Allah made obligatory upon him and transferred the worship from its time to another time without the permission of the Lawgiver. It is established from the Prophet (peace and blessings be upon him) that he said: Any returned [fast] is rejected. So we say: as long as Allah has granted you repentance, do more good deeds and fast what you have reached after repentance. And Allah the Exalted has promised the repentant acceptance, so He said, Mighty and Majestic: The addition.