Revision of Return 3rd Time without Penalty

Hi,

Please let me know if the income tax return can be revised for the 3rd time without paying a penalty.

For example, if the original return was filed before 31st August 2019 for the Assessment Year 2019- 2020.

Later the return was revised in Sept 2019.

Now, if again wants to file the revised return in Oct 2019 for the same period, will he need to pay the penalty,since original return is defective .