Yasir said the idea of reaching the three-figure landmark score lingered in the back of his mind as he made his way to the ground in the morning.
Mitchell Starc and Josh Hazlewood removed three Pakistan batsmen to strengthen Australia's bid for a massive innings victory to complete series sweep.
Warner was unbeaten on 335 when skipper Tim Paine waved his arms from the dressing room to call back the Australian batsmen.
David Warner etched his name in the history books with the second-highest Test score by an Australian.
Warner and Labuschagne scored back-to-back centuries but there was not much to cheer for Pakistan who looked out of sorts.
Smith said he is more motivated by Yasir's celebration and will bat with more discipline. It remains to be seen who will have the last laugh.
"Abbas can definitely bring a lot of control and he has worked a lot since the last Test match on his rhythm and he is feeling better."
Smith did not share the view that Yasir had his number as he pointed out a lot of times he had gotten out to him while trying to collect quick runs.
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