Spinners Ravichandran Ashwin and Ravindra Jadeja eviscerated Australia in just over two hours to hand India a crushing innings-and-132-run victory Saturday inside three days of the opening Test.The hosts took a commanding first-innings lead of 223 in Nagpur, then skittled out Australia for 91 in an extended second session to take a 1-0 lead in the four-match series.Steve Smith was left to survey the ruins on 25 after Ashwin, who took five wickets in the innings and eight in the match, triggered a complete batting collapse inside a single session.EXPLAINED | How inaugural SA20 final will be decided if Joburg's incessant rain wins the day(s)Ashwin rattled the opposition batting with his off-spin as he sent back Usman Khawaja (five), David Warner (10) and Matt Renshaw (two).Jadeja, who grabbed five in the first innings, took two wickets including Marnus Labuschagne -- Australia's first-innings top-scorer with 49 -- trapped lbw for 17.But Ashwin ruled the afternoon to run through the Australian batting, which fell flat on a pitch where India's tail including Axar Patel (84) and Mohammed Shami (37) scored handsomely in the first session.Shami bowled Nathan Lyon for the ninth wicket to extend the session and finished the job when he trapped Scott Boland lbw.Debutant spinner Todd Murphy was the tourists' sole saving grace, adding two more wickets on Saturday morning to return figures of 7-124.Murphy, who on Friday became the youngest Australian spinner to bag five in his first Test, bowled Jadeja for 70 early in the morning session to end an 88-run eighth-wicket partnership with Axar.SCOREBOARD | India v Australia, 1st TestJadeja, a left-hander making his international return from a knee injury, added just four to his overnight