Malinga, in the balls previous, kept placing his bowling hand in his pocket which prompted commentator Michael Clarke to reveal the 33-year-old keeps a hand warmer in his pocket.
‘He normally has a hand warmer in pocket as it’s a little bit cold here at the MCG at night,’ Clarke said during the coverage.
‘He’s just got one warmer in there to keep the fingers warm for the way he releases the ball.
‘It’s legal, so everyone who thinks why does he keep placing his hands in his pocket, it’s just to keep it warm before he delivers the ball.’
Malinga showed Martell the white hand warmer which he deemed legal, handed him the ball and the game continued.
The game was a nail biter with the tourists securing a thrilling final ball victory.
Chamara Kapugedera was the hero hitting a four on the last ball to hand Sri Lanka a five-wicket win over Australia in their opening T20 clash at the MCG.
The tourists were cruising at 3-151 in the 18th over, before first-gamer Ashton Turner snared the wickets of Asela Gunaratne and Milinda Siriwardana.
Scores were then tied on the last delivery, with Kapugedera pumping his fist in glee after driving Ashton Tye through cover for the match-winning runs.
Sri Lanka scored 5-172 in reply to Australia’s 6-168 from their 20 overs.
Top Sri Lankan paceman Lasith Malinga made a successful return to international T20s – he was on a hat-trick late in the Australian innings, finishing with 2-29 from four overs, and also took two catches.