Can we wash clothes after C-section?

Don't even think of tackling laundry, putting away dishes or climbing stairs (except as necessary) for at least a week after you get home.
After 6 weeks you can start normal household work if comfortable. But heavy work should be avoided till 6 months.

For A C-Section Recovery
It’s safe to walk, go up and downstairs and do very light housework, but only when you’re feeling up to it!

Avoid anything that will put strain on your body or incision which won’t have maximum strength until 4-5 weeks postpartum.
Don’t do heavy lifting (anything heavier than your baby) or anything that requires you to bend over or push (such as pushing a shopping cart or even vacuuming). If you do need to lift something, bend at the knees and not the waist!
You should also avoid getting your incision wet and all the other standard things not to do during postpartum.
Avoid anything that will put strain on your body or incision which won't have maximum strength until 4-5 weeks postpartum.