करते ही

do indeed; have to do

→ करना
phrase Uncommon #3,293
do indeed; have to do ही adds emphasis to the verb; with some verb forms, it can also express necessity. The examples use other forms of करना with ही.
HI: तुम यह काम करते ही हो।
EN: You do this work, after all.

उसने कहा था कि शादी करते ही आप लोग वापस भटिंडा चले जाएँगे।

They had said that you’d all move back to Bhatinda as soon as you got married.

— Jab We Met (2007)

वह अपना काम खतम करते ही घर चला गया।

As soon as he finished his work, he went home.

किसने कहा था शादी करते ही?

Who said you had to get married right away?

— Jab We Met (2007)