The brothers then spend several seasons apart, both enduring capture by the Starks. Tyrion effectively survives his ordeal with a sharp mind and promises of Lannister gold. Jaime, however, doesn't fare as well. His argumentative nature gets him recaptured by the Boltons, whereupon he loses his hand. Once he returns to King's Landing, Tyrion is one of the few people to treat his brother with the same respect he'd held prior to the accident.
In "The Lion and the Rose," Jaime is the grotesque cripple he once mocked, and he doesn't understand how he can be useful to the family since the hand he lost is his dominate fighting hand. Tyrion rallies his brother's spirit by suggesting he train his left hand and offers Bronn the sellsword as Jaime's new teacher.