Question

I congratulate you for your success . correct this sentence

Answer 1

The given sentence will be written correctly as shown below:

I congratulate you on your success.

Explanation:

When we use the verb 'congratulate', we use the preposition 'on' with it. It is a convention of the usage. Hence, we must use 'on' in place of 'for'. 

Answer 2

Answer to your question:

The right sentence is I congratulate you on your success.

When we congratulate someone, it is necessary to use the word or preposition 'on' in one sentence. They are mutually dependent on each other. That's why we use 'on' instead of 'for'.