Rahul Dravid was a relieved man as India avenged their defeat to Bangladesh in the World Cup with a five-wicket win in Dhaka.
Dravid celebrates a wicket in the first ODI
Mahendra Dhoni and Dinesh Karthik guided India to their 251 target after they had been reduced to 112-4.
Dravid said: "We needed to win. I'm really proud and happy for the two boys for an exceptional partnership and under tough conditions.
"That is the kind of attitude and players we are hoping to find."
The second game of the three-match series will be played in Dhaka on Saturday.
Dravid added: "We'll have a day's break and try and win the next game. Fielding in the morning is quite a challenge. It's a distinct advantage if you can bat first in this heat and humidity."
Bangladesh skipper Habibul Bashar said his side were disappointed to lose as they had batted well to reach 250-7 in their 47 overs.
He added: "We played well, but at the end it slipped out of our grip as we failed to break the partnership of Dhoni and Karthik.
"Unfortunately we relied too much on out spinners and we gave too much away in the first 10 overs."