What was the cruel trick played on boxer when he fell ill and needed the help of his fellow animals the mot?

In George Orwell's "Animal Farm," when Boxer, the hardworking horse, falls ill, he is led to believe that he will be taken to a veterinary hospital for help. In reality, the pigs sell him to a glue factory, betraying his trust and loyalty. This cruel trick highlights the betrayal of the working class by those in power and serves as a poignant commentary on exploitation. Boxer’s fate underscores the dangers of blind loyalty and the manipulation by those in authority.