Thirty two senior citizens from Madhya Pradesh on Sunday left for Prayagraj in Uttar Pradesh on free pilgrimage by air under a scheme of the state government. Chief Minister Shivraj Singh Chouhan reached Bhopal's Raja Bhoj Airport in the morning to greet the 32 senior citizens, comprising 24 men and eight women. Taking a swipe, Congress veteran Kamal Nath urged the Chief Minister to "stay grounded".