surpassing one's master
A literary idiom meaning that a student or disciple has surpassed their teacher. Often used in formal or congratulatory contexts.
His work has surpassed his master's; it is truly a case of the student outshining the teacher.
出藍の誉れという言葉があるように、弟子が師を超えることは素晴らしいことだ。
As the saying goes, it is wonderful when a disciple surpasses their master.