Pakistan's Hasan Ali uses saliva to shine the ball, warned by umpire

Pakistan pacer Hasan Ali used saliva to shine the ball during the third day of first Test against Bangladesh. As per current rules, a player is not supposed to use his saliva to shine the ball. The on-field umpire warned Hasan Ali for shining the ball with his saliva. Pakistan bowling coach Vernon Philander was also seen talking to Hasan.