Guide me on how I can make my father maintain his prayer and not leave any obligatory prayer?

Question:
May Allah reward you with good. He says: My father prays in the month of Ramadan and on Fridays, and he prays at some times and leaves off at others. And when the time for prayer comes and he is in the house, I tell him to pray, and he listens to me and prays. Guide me, Honorable Shaykh, on how I can make my father maintain his prayer and not leave any obligatory prayer?

Answer:
You should advise him and admonish him. Allah, Glorified and Exalted is He, said: This is a command from Allah, Glorified and Exalted is He, to preserve the prayers. And He, Glorified and Exalted is He, said: He, Glorified and Exalted is He, said: Preserving the prayers at their times and in congregation is a cause for entering Paradise, as in these two verses. In contrast, Allah, Glorified and Exalted is He, has threatened those who neglect the prayers. He, Glorified and Exalted is He, said: except for those who repent. "Ghaya" is a word of punishment and severe threat. It is said to be a valley in Hellfire.
If the mountains of the world were sent into it, they would melt. Allah, Glorified and Exalted is He, said: . And the meaning of "they are heedless of their prayer" is that they delay it from its time. So if the one who prays but delays the prayer from its time is threatened with this severe threat, what about the one who abandons the prayer entirely and does not pray except for some of the prayers? This person is a disbeliever in Allah, Mighty and Majestic, and has exited the religion, because he has abandoned the pillar of the religion and the pillar of Islam, which is the second of the pillars of Islam after the testimonies of faith. So this person has no religion. Therefore, you must advise him and recite these verses to him, and the words of the scholars if advising is possible, regarding the negligence of prayer, and explaining the threat that comes in it; perhaps Allah will guide him, or the proof will be established against him, and the responsibility will be cleared regarding him. Allah is the One to be sought for help. Allah is the One to be sought for help.