The Ruling on Making Up Missed Prayers and Fasts for One Who Deliberately Abandoned Them Before Repentance

Question:
A man was immersed in major sins and did not pray or fast, but Allah the Exalted guided him years ago, so he avoided major sins and began to pray at their times and to fast. Does he have to make up the fasting or praying that he owed from the past before his guidance?

Answer:
Repentance wipes out what came before it, if one did not pray or fast and committed major sins, then repented. Repentance wipes out what came before it. Allah Mighty and Majestic says in His great Book: [An-Nur:31] So whoever repents has succeeded. And He says, Exalted is He: [At-Tahrim:8] The word "perhaps" from Allah is obligatory. So Allah forgives his evil deeds if he repents. And He says, Mighty and Majestic: [Ta-Ha:82]. And He says, Exalted is He: [Al-Furqan:68].
The point is that Allah Mighty and Majestic explained the state of the fornicator, the thief, and the sinner: Among the characteristics of the slaves of the Merciful are that they do not invoke any deity besides Allah, they do not kill the soul which Allah has forbidden except by right, and they do not commit fornication. Among the characteristics of the slaves of Allah are chastity from fornication and chastity from killing souls without right. And among the characteristics of the slaves of the Merciful are sincerity to Allah and complete tawhid (the oneness of Allah). Whoever does the opposite of that, whether he associates partners with Allah, kills a soul without right, or commits fornication, his punishment will be multiplied on the Day of Resurrection, and he will abide therein in humiliation. [Al-Furqan:68-69] We seek refuge in Allah from that. [Al-Furqan:70].
And the Prophet (peace and blessings be upon him) said: , and he (peace and blessings be upon him) said: So whoever repents from his evil deeds and actions, Allah forgives them for him.
And repentance has three conditions: regret for the past evil deeds, abandoning them, and the sincere resolve not to return to them. This repentance is that one regrets his past evil deeds, such as shirk (associating partners with Allah) and disobedience, and that he abandons them and leaves them out of fear of Allah, reverence for Him, and sincerity to Him, and that he resolves with a sincere resolve not to return to them. If he does this, he has repented with sincere repentance, and Allah forgives his past sins with it.
And there is a fourth condition if the sin involves a created being. It is necessary to have a fourth condition, which is to seek his forgiveness or give him his right. If the sin involves wronging a person, taking his money, hitting him, or killing him, it is necessary to give him his right or seek his forgiveness for that, and to give the right of the killed person retaliation, unless the awliya (close friends of Allah) of the killed person pardon. In the case of money, he gives him the money that was taken from him. In the case of honor, likewise, he seeks forgiveness if the right was backbiting. If that is not possible for him, he prays for him and mentions him with the good he knows of him in the gatherings where he mentioned him with evil. The point is that if the right belongs to a created being, it is necessary, along with the three conditions, to have a fourth condition, which is to give the created being his right or seek his forgiveness for that.