What achieves sincerity of the servant in this world and the Hereafter
The answer is: Feeling of reassurance and serenity of faith, which brings him happiness and peace of mind.
Sincerity is an essential factor in achieving success in this world and the hereafter for the servant. It is the feeling of love for something, a desire to put in effort and time. When a servant turns to their Lord with their good deeds and deeds sincerely, God accepts them. Self-punishment for every sin and self-accountability can help the minister remain faithful in his efforts. It is important to remember that sincerity will lead to blessings in this world and the hereafter.
