Why have you permitted the saying "May God hear from you," despite the potential problems in the speaker's interpretation of its meaning (as a supplication, or an affirmation of hearing or answering), and the confusion it causes with the supplication of hearing or answering, and the resulting erroneous belief, or attributing falsehoods to God, or using a phrase that carries a corrupt meaning?

The phrase "Allah hears from you" means that Allah accepts from you and answers your supplication. This meaning is commonly used in religious texts, as indicated by Allah Almighty's saying: "So his Lord responded to him and averted from him their plot. Indeed, He is the All-Hearer, the All-Knower," and the words of Al-Khalil (Abraham): "Indeed, my Lord is the Hearer of supplication," and our saying in prayer: "Allah hears those who praise Him," meaning Allah answers the supplication of those who praise Him. Thus, "Allah hears" here means acceptance and response, unlike the prohibited saying "Ra'ina" due to its derogatory connotation.