The duo appeared to click instantly, adding 136 runs together for the opening wicket, to register India's record-high opening partnership in the ICC Men's Cricket World Cup.
Khan, one of the greatest cricketers of Pakistan, had personally advised his national team to bat first in a series of tweets posted before the match at Manchester's Old Trafford.
Virat Kohli on Sunday became the fastest batsman to reach the 11,000 run mark in the ODI cricket. He achieved the feat in today's match between India and Pakistan in the ICC Men's Cricket World Cup.
India made one change in their playing XI, Shikar Dhawan was ruled out after being struck on his finger during the match against Australia on June 9, Vijay Shankar replaced him.
From performing havans to special puja rituals, cricket fervour has gripped the country with hype building up for the much-awaited match.
Along with Warner, Smith will also play in his first game since the 2018 scandal. The right-hander will feature in the middle-order with all-rounders Marcus Stoinis and Glenn Maxwell. That would leave Nathan Coulter-Nile, Jason Behrendorff, Kane Richardson and Nathan Lyon jostling for one spot.