The incident took place when the Indian players were making their way into the dressing room after the end of the day's play on Saturday.
On the second morning, it was Ben Stokes who entered the stage and made it his own with big-hitting. He smashed 82 off 118 balls with 10 fours and three sixes and let Root rotate the strike in their 124-run stand.
Joe Root slammed a majestic double ton to enter record books. While Ben Stokes also played a crucial knock of 82 runs to counter-attack Indian bowlers.
England captain Joe Root took 324 balls to reach his fifth double century in Test cricket.
Joe Root and Ben Stokes have shared an unbeaten 92-run stand for the fourth wicket as India remained wicketless before lunch to take England to 355/3.
Opting to bat first, England ended day one at a promising 263/3 with Root scoring a fine century in his landmark 100th Test.
Bumrah also explained that sweat, which is lighter than saliva, is not at all a good option to prepare the ball for reverse swing.
The 30-year-old Root has mastered the sweep shot- a shot in his weaponry that maximizes the power of his slight bodily structure.
India captain Virat Kohli set his sights on team success rather than personal glory after his hundred in the first Test against England was overshadowed by the tourists' 31-run defeat.
Top pictures from the Day 4 of the 1st India vs England Test at Edgbaston which Virat Kohli's men went on to lose by 31 runs