Chasing 156 to win, Sri Lanka folded for 116 in the 18th over with Dinda (4-19) and Pathan (3-27) doing the bulk of the damage.
Virender Sehwag missed the final ODI due to a glute problem and has returned to India. Zaheer Khan has also headed back, to the National Cricket Academy in Bangalore.
The world number two ranking clinched following a dominating 4-1 triumph in ODIs, India will now look to stamp their authority against Sri Lanka in the only Twenty20 international on Tuesday at Pallekele.
India defeated hosts Sri Lanka by 20 runs in the final tie of the 5-match ODI series and clinched the series 4-1 at the Pallekele in the final ODI on Saturday. India rise to 2nd in the ODI ranking.
India have won the toss and elected to bat in 5th ODI against Sri Lanka at Pallekele on Saturday.
With the series under their belt, a confident India will look to continue their dominating run and complete a 4-1 drubbing over Sri Lanka in the final ODI.
India notched up their 400th ODI victory when they thrashed Sri Lanka by six wickets in the fourth ODI of 5-match series at R Premadasa Stadium in Colombo.
Virat Kohli slammed a brilliant century to help India seal 5-match ODI series with a sensational six-wicket victory over Sri Lanka in the 4th match on Tuesday.
Sri Lanka won the toss and elected to bat. India will look to continue their recent dominance against Sri Lanka and wrap up the series by winning the 4th ODI.
India would look to seal the series when they take on gritty Sri Lanka in the fourth and penultimate ODI at the R Premadasa Stadium on Tuesday.