What is the ruling on using the saying: "No one prays but that forgiveness is prolonged," which you believe is from the sayings of Christians or infidels, and that it contradicts the fact that prayer is obligatory and not for seeking recompense?

There is no objection to the phrase "No one prays but that forgiveness is extended," as it is an encouragement to prayer and an affirmation that the one who performs it attains forgiveness. This does not contradict the fact that prayer is obligatory; rather, it is a cause for the forgiveness of sins, the expiation of misdeeds, and the elevation of ranks, as stated in prophetic traditions. This promise of forgiveness is conditional upon the acceptance of the prayer. It is not permissible to definitively state that a specific person has attained forgiveness because acceptance is part of the unseen. Worshipping Allah by seeking the expiation of misdeeds and the elevation of ranks is a praiseworthy act.