India made a competitive total very ordinary as they chased down 260 with 79 balls to spare.
Narendra Modi congratulated India after they beat Ireland at Hamilton.
India comfortably beat Ireland by eight wickets and to Pool B
India eased past Ireland by eight wickets and created a new World Cup record
Shastri's comments came after the India's resounding eight-wicket win against Ireland at Hamilton on Thursday.
India beat Ireland by eight wickets and will go into the quarter-finals on top of Pool B.
President Pranab Mukherjee congratulated the Indian cicket team for victory against Ireland.
India beat Ireland by eight wickets to record their ninth successive win in the World Cup.
Rohit Sharma and Shikhar Dhawan put up a strong 174-run opening stand in under 24 overs.
India romped home to their ninth consecutive victory in the ICC Cricket World Cup by beating Ireland.