Spin introduced for the first time on Day 4 as Ravindra Jadeja comes into the attack for the first time in the Test match.
Mominul defends the first ball before he misses the sweep next ball. The left-hander sweeps the fifth ball fine on the leg side for a four.
He slog sweeps the last ball over midwicket for another boundary.
Siraj continues as Litton blocks the first ball on the off-side and leaves the next and the same next two balls.
The last ball comes in sharply as Litton is struck on the pads but the leg before shout is turned down.
Jadeja from the other end. Mominul picks a single off the first ball and Litton inside edges the fifth ball for one run on the leg side and the former blocks the last ball.
At the first drinks break, Bangladesh are 148/4 in 49 overs, with Mominul on 62 and Litton on 13.
They have scored 41 from 14 overs while losing a wicket in the first hour on Day 4.
This has been slow progress by Bangladesh, who want to bat as long as possible. They want to ensure that they don't give India any chance of making a match out of this. But Litton throw it away with a horror shot.
Siraj tries the short ball at Litton, who leaves it alone before he is beaten by a full delivery which moves away.
Litton comes down the track to hit Siraj over the top but fails to get enough elevation and Rohit takes a stunning one-handed catch at mid-on.
That ball looked to have cleared Rohit at mid-off, but he times his leap to perfection and stuck his right hand out to pick the ball out of mid-air for a sensational catch.
Litton walks back for 13 as Bangladesh slip to 148/5 in 50 overs.