Ashwin, who had scalped six wickets on the opening day, cliamed the wicket of last man Nathan Lyon to return with figures of 7/103, while left-arm spinner Ravindra Jadeja (2/71) and Harbhajan Singh (1/87) were the other wicket-takers.
The Indian reply was disastrous to start with as openers Virender Sehwag (2) and Murali Vijay (10) departed in close succession, falling to tearaway pacer James Pattinson, who was used in short spells.
But Cheteshwar Pujara (44) and Tendulkar steadied the innings to some extent with a 93-run third-wicket partnership. Both the batsmen launched a brilliant counter-attack to unsettle the Aussie bowlers.
In Image: Pujara and Sachin run between the wickets