Chasing a stiff 337-run target, Pakistan were already down and out when rain stopped play after 35 overs. They had managed just 166 runs for a loss of six wickets, nowhere near the DLS par-score of 252.
When play resumed, the match was reduced to 40 overs with a revised target of 302, which meant that Pakistan required 136 runs from five overs. Imad Wasim (46) and Shadab Khan (20) remained unbeaten to end at 212 for six, handing India a comprehensive victory via Duckworth Lewis method.
Chinaman Yadav (2/32) broke the rival batting spine by removing set batsmen Fakhar Zaman (62) and Babar Azam (48) in successive overs.
Hardik Pandya (2/44) did prove his all-round worth by removing the two veterans Mohammed Hafeez (9) and Shoaib Malik (0) off successive deliveries ensuring that Bhuvneshwar Kumar's hobbling out due to stiff hamstring does not affect them at all.
This is India's seventh win over Pakistan in World Cup and like the previous six times, the quality of the contest did not live up to the hype created.
Pakistan skipper Sarfaraz Ahmed erred in his decision making throughout, first with team selection and then by opting to field. The defensive approach throughout the game also did not help his side. Knowing that rain could play spoilsport, they never took the Duckworth-Lewis par score into account, letting India bowlers dictate the terms.
Earlier, Rohit Sharma scored his 24th ODI hundred - 140 off 113 balls while KL Rahul (57) played the perfect second fiddle in an opening partnership of 137 runs.
Skipper Virat Kohli switched gears effortlessly during his 77 off 65 balls and also became the quickest to 11,000 ODI runs, eclipsing a 17-year record held by iconic Sachin Tendulkar.
Mohammed Amir (3/47) pitched the ball up and maintained discipline despite a couple of official 'warnings' for running onto the pitch while Wahab Riaz (1/71) and Hasan Ali (1/84) bowled short consistently.
Courtesy Amir, Pakistan did make a comeback in the final few overs as India managed only 38 runs in the final five overs. Vijay Shankar (15 off 15 balls) struggled with his timing, failing to read Amir's cutters.