Dinesh Karthik smashed a six off the final ball to win the the Nidahas Trophy and consign Bangladesh to an agonising four-wicket defeat after they were on the brink of pulling off a shock.
India needed five for victory off the last delivery in Colombo and Karthik launched Soumya Sarkar over the cover boundary to leave the Tigers shell-shocked.
Sabbir Rahman top scored with a superb 77 off only 50 balls to get Bangladesh up to 168-6 in Sunday's showdown, Yuzvendra Chahal the pick of the India bowlers with figures of 3-18.
Captain Rohit Sharma made 56, but the Bangladesh bowlers looked to have done enough to give them a stunning triumph, with India needing 34 to win off the last two overs.
Karthik proved to be the match-winner, his unbeaten 29 from only eight balls rescuing India and leaving the underdogs in disbelief two days after a thrilling win over Sri Lanka which included unruly on-field scenes in a tense climax.
The craft of Chahal had the Tigers in trouble on 33-3, Shardul Thakur taking a superb catch on the boundary to dismiss Tamim Iqbal and the spinner removing Sarkar in the same over.
It was left to Sabbir to get his side up to a competitive total, the number three hit four sixes and 11 boundaries in total, 84 coming off the last eight overs after Bangladesh had found runs hard to come by.
Mehidy Hasan hit the expensive Thakur for 18 off the last over, but the spinner was given a taste of his own medicine early in India's run chase, Rohit hitting him for two huge sixes and a four.
Rubel Hossain (2-35) made it all to play for by getting Suresh Raina caught behind and removing KL Rahul (24) after Shikhar Dhawan fell early on to captain Shakib Al Hasan.
The runs dried up for India and Rohit was taken by Mahmudullah at long-off with 69 needed to win in the 14th over soon after reaching his half-century.
Mustafizur Rahman conceded only one run and got rid of Manish Pandey (28) in a brilliant 18th over, but Karthik took 22 off the next from Rubel.
With 12 needed off the last over from Sarkar, it was left for Karthik to be the hero and he stepped up when India needed him.
|Europe must stop American juggernaut at Carnoustie|
|Joshua planning for heavyweight ´legacy´ – starting with Povetkin|
|Warburton retires: Wales and Lions star´s career in numbers|
|Matching ´ridiculous´ Tiger not on McIlroy´s radar|
|Spain sent me World Cup SOS, claims Benitez|
|Ozil, Gundogan critics should ´shut up´ - Klopp|
|McIlroy plans to play carefree at Carnoustie|
|Pakistan thrash Zimbabwe to secure series win|
|Warburton retires: Gatland salutes Wales and Lions great|
|Sturridge determined to stay at Liverpool|
|Mbappe is an alien – Varane|
|Warburton retires from rugby|
|India to assess Bhuvneshwar as Bumrah makes Test squad|
|Injured Craddock passes $100,000 in donations at Tour de France|
|WATCH: Perez taunts team-mate after audacious training goal|
|Alison Becker tweets ´I´m joining Liverpool´... but all is not as it seems|
|Notorious Carnoustie holds fond memories for legendary Watson|
|Rooney refused to be ´dead weight´ at Everton|
|The Open 2018: Molinari, Rahm and the in-form contenders at Carnoustie|
|Marsh interested in Australia leadership roles|
|United can challenge City for Premier League title, says Rooney|
|MLB All-Star 2018: Seven things you missed at Midsummer Classic|
|American League win home run-filled MLB All-Star game|
|Dragons lure Sims from Broncos|
|Cassano: Ronaldo like Nadal, Messi like Federer|
|Lakers´ Ball undergoes successful knee surgery|
|´We kill them, Messi or no Messi´ - Pogba´s pre-Argentina World Cup speech revealed|
|Cardinals suspend GM Keim for five weeks after DUI|
|Dalic: I can coach Brazil or Barca but Croatia my favourite|
|Warriors coach Kerr extends contract|
|I´m ready to bust him up - Miller calls out Joshua after New York confrontation|
|CAF Champions League Review: ES Tunis and TP Mazembe set the pace|
|Mixed day for seeds in Newport as Muller progresses|
|Rams sign Cooks to five-year extension|
|Cowboys’ Randy Gregory reinstated by NFL|
|Verdasco survives Swedish Open scare as Paire is picked off in Umag|
|US Open announces record prize fund for 2018|
|Stosur wins battle of former grand slam champions in Gstaad|
|Emery is Arsenal´s best signing, says Pires|
|Brewster commits to Liverpool with long-term deal|
|Panama boss Gomez steps down after World Cup|
|No Chelsea agreement for Golovin, claims CSKA president|
|Root looks right at home as England ease to series victory|
|Brighton sign Mali midfielder Bissouma from Lille|
|Kaka backs Brazil boss Tite after ´excellent´ World Cup|
|Alaphilippe the toast in France as Van Avermaet increases Tour lead|
|Shkupi 0 Rangers 0: Gerrard´s men advance despite dour draw|
|Khazri ends Sunderland nightmare as Saint Etienne swoop|
|The Open 2018 diary: Rose lets Rio go as Rahm goes ´Lefty´|
|Lampard raids Chelsea and Liverpool in Derby double swoop|
|Balotelli returns to Nice training after Marseille talks stall|
|Owens wants to play in the CFL, says agent|
|I don´t like thinking too much - Johnson|
|Toulon president fined as French club receive suspended points penalty|
|Top of the flops - Mickelson plays exquisite trick shot over man´s head!|
|Kerber targeted Wimbledon after 2017 disappointment|
|England´s World Cup heroes given dedicated parking spots|
|Insigne prefers Messi to new Juve star Ronaldo|
|Koepka enjoys playing with a chip on the shoulder|
|Ryan Hall to leave Leeds Rhinos amid reports of NRL move|
|Hamann slams Lahm for Low criticism|
|Hart named in Manchester City squad for United States tour|
|F1 Raceweek: Leader Vettel heads home|
|Unfair to pin Brazil blame on Neymar, says Kaka|
|Thomas and friends ´want to beat each other´s brains in´|
|Woods´ love for links fathered at Carnoustie|
|Confident Rose targets tournament wins and number one spot|
|Hallgrimsson leaves Iceland post|
|Australian Open to consult players over fifth-set tie-breaks|
|Daley´s coming home - Ajax rewrite Three Lions anthem|