How did Mahatma Gandhi's fast in Delhi in 1947-48 affect the communal tension and violence?

It reduced communal tension and violence.

In 1947 Gandhi later moved to Delhi, where he was concerned about the treatment of Muslims as equal citizens and the relations between India and Pakistan.
In January 1948, Gandhi undertook his last fast, which had a positive impact in reducing communal tension and violence in Delhi, allowing Muslims to return safely to their homes.