The decision of the umpires not to check for a ball in the first instance was controversial. They instructed the players to go back to the field but they did not. The players' emotions were high, and Assistant Coach Praveen Amre ran on the field to question the umpires' decision. The crowd continued to chant "cheaters! cheaters!" DC lost the match with 15 runs. It was interesting to note that this incident reminded us of an incident Mahendra Dhoni had been involved in several decades ago.
Law 21
A ball is considered valid if it offers a chance for a batsman to strike it. A valid ball is one that is either a wide or no ball. A delivery that is declared to be invalid may also be deemed valid if it breaks one of the following rules: 20.2.6 (Deliberately distract the batter) or 20.4.2.6(Ball disallowed for being wide or No). If a batsman gets stranded, he or she is out.
Law 27
A no ball is defined as any ball that isn't thrown in the striker’s direction. This is also known unplayable balls and is recorded against your record. There are exceptions to the no-ball rule. If there has been a special agreement between the captains, the no ball may be thrown underneatharm. This has been repeated twice in international cricket.
Law 40
A no-ball is a situation where there is no way out. This is when the batter does not reach the ball. This happens when the batter is unable to hit the ball twice, Laws 34-37 (hitting two times), Law 38 (being out), and Law 40(bowling over the batter's head).
Law 41
If a fielder is distracted, then the umpire must signal a dead ball and must inform the opposing umpire of the reason for the call. A dead ball does not count as an out and the batting team is given five runs. The umpire must inform both the batters as well as the striker about the dead ball. This rule is crucial to ensure fair delivery.
Law 42
If a ball is not in the crease, but the bowler's backfoot is outside of the crease, the umpire can signal a No ball. During the delivery swing, a bowler must not straighten their elbow joint while reaching for the shoulder. This does not mean that the bowler cannot flex his wrist during delivery swings. If all three conditions are met then the end umpire should signal No ball.
Law 40 (wicketkeeper).
There are two types of no-balls called "wicket-keeper". One type is a deliberate step, which will be considered unfair by the umpire. However, an intentional no-ball which violates any of the Law provisions will not result in the umpire deeming it unfair.
Law 42 (Unfair play)
When umpires determine that an action taken by one team is unfair, a cricket match is considered unfair. If this happens, the umpires have the right to intervene, but they shouldn't interfere with the game's progress. This includes a fielder who lifts the seam during a delivery. If this happens, the umpire should change the ball.
Law 41 (fielder).
If the fielder attempts to distract the striker, the umpire must signal dead ball. The call must be made by the umpire to the other umpire. A dead ball is not an over and carries five penalties runs to the batting side. The umpire should also notify the batters, and the batting side of the call. If the fielder does not attempt to distract the striker, the dead ball stands.