India's premiere off-spinner Ravichandran Ashwin on Sunday became the fastest bowler to take 250 Test wickets.Ashwin who needed two wickets before the start of the ongoing one-off Test against Bangladesh here, achieved the milestone in 45 Test matches, surpassing Australian legend Dennis Lillee, who had reached the 250-wicket mark in 48 matches.Ashwin scalped all-rounder Shakib al Hasan (82) on third day and then sent back skipper Mushfiqur Rahim (127) in the first session on the penultimate day to achieve the landmark.Earlier, India took a lead of 299 runs after Bangladesh were bowled out for 388 in the first innings at lunch on the penultimate day.For the visitors, skipper Rahim (127), all-rounder Hasan (82) and Mehedi Hasan Miraz (51) were the major contributors for the cause.