The Prayer abandoned intentionally or performed without ritual purity
It is an obligation upon the questioner to be truthful and sincere in his repentance of the sins he has committed, and to continue regularly offering Prayers and observe Fast in Ramadan. On the other hand, the questioner is not obligated to make up for the missed Prayers or the missed days of Fast. According to the more preponderant of two opinions of Muslim scholars, whoever
abandons prayers intentionally has committed a major disbelief. This is because the Prophet Muhammad (peace be upon him) said:
What stands between a Muslim and disbelief is his abandonment of Prayer.
(Narrated by Imam
Muslim) Furthermore, there are other proofs supporting this view. It is noteworthy that repentance of sins obliterates all past sins, and all praise is due to Allah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.