Pakistan's President Asif Ali Zardari has arrived in India in the first visit there by a Pakistani head of state for seven years.
Mr Zardari will meet India's Prime Minister Manmohan Singh before travelling to an important Muslim shrine in Rajasthan.
The visit is predominantly for what are described as "private religious reasons" but Mr Zardari will stop for lunch with Mr Singh on the way to the shrine, the BBC reports.
The Pakistani leader has backed the lifting of trade restrictions on India, so there are hopes the visit will boost the two countries' economic relationship.
However, there are no expectations of a breakthrough on any of the other issues that divide them.
Just this week, India again called for Pakistan to hand over Hafiz Saeed, the man it alleges planned the 2008 Mumbai attacks.
The call was made after Washington announced a $10 million reward for Saeed's arrest.