Conversation so far:
When did Narendra Modi's second term as Gujarat's chief minister begin?
Narendra Modi was sworn in as Gujarat's chief minister on 20 December 2012.
What was the last system implemented in Gujarat's power distribution called?
Jyotigram Yojana is an initiative of the Government of Gujarat to ensure availability of 24-hour three phase quality power supply to rural areas of the state
What is credited to Gujarat's decline in corruption during Narendra Modi’s time as Chief Minister?
His policies during his second term have been credited with reducing corruption in the state.

Question: what is one
Self-contained rewrite: What was one of Narendra Modi’s policies to curb corruption in Gujarat?