Virat Kohli became the first batsman to score double centuries in four consecutive series as India posted a record 620 for six against Bangladesh by tea on Friday.
Kohli was trapped lbw off Taijul Islam early in the session after he surpassed legends including Donald Bradman and Rahul Dravid, who had scored double tons in three consecutive series.
Despite the wicket of the 28-year-old skipper, runs came thick and fast for the Indian batsmen with Saha taking charge aided by Ravichandran Ashwin (34).
The duo put on 74 runs for the sixth wicket before Ashwin fell to teenage spinner Mehedi Hasan, who has claimed two wickets.
Saha made his fifth Test half-century as he smashed six fours and a six during his knock.
Earlier Kohli's 222-run fourth-wicket partnership with Ajinkya Rahane (82) set the hosts on course as they broke their previous highest score against Bangladesh of 610, set in Dhaka in 2007.— AFP