When we were young, our parents and elders all taught us not to lie. Many stories and fairy tales illustrate the consequences of lying, such as a child being eaten by a wolf or having a long nose like Pinocchio. Different cultures and religions praise honesty and disapprove of liars. However, most of us have told a lie at one time or another, often to gain an immediate benefit, without realizing that the long-term consequences of lying can be very costly. In Buddhism, one of the ten precepts is to abstain from lying.
There is a recorded story in a Buddhist sutra about Shakyamuni Buddha teaching his son to refrain from lying.
The Buddha’s son, Rahula, was quite mischievous in his youth. He often enjoyed playing pranks on others, using deceptive words to tease people. For instance, when someone came to see the Buddha, Rahula, knowing that the Buddha was not present, would intentionally mislead them about the Buddha’s whereabouts, causing them to search in vain for amusement.

When the Buddha learned of this, he asked Rahula to bring him some water to wash his feet. After washing his feet, the Buddha pointed to the water and asked Rahula, “Can this water be drunk?”
Rahula replied, “The water is dirty from washing feet; it cannot be drunk.”
The Buddha then asked, “Can this basin, used for washing feet, be used to hold food?”
Rahula replied, “No, it cannot. The basin is dirty and cannot be used to hold food.”
The Buddha sternly said, “You are like this water. The water was originally very clean, just as you were originally a prince, able to renounce the false glories of the world and become a monk. But if you do not diligently pursue the path, do not purify your body and mind, and do not speak carefully, the impurities of the three poisons will fill your heart, just like the clean water being soiled by washing dirty feet. You are like this basin. Although you have become a monk, if you do not practice precepts, concentration, and wisdom, and do not purify your body, speech, and mind, how can the food of the Great Path fill your heart?” After speaking, the Buddha kicked the basin, causing it to roll. Rahula was very frightened. The Buddha asked, “Are you afraid the basin will break?”
Rahula replied, “No, the basin is a coarse utensil; it doesn’t matter if it breaks.”
The Buddha said, “Rahula, you don’t cherish this basin, just as people will not cherish you. As a monk, if you do not uphold dignity and discipline, and speak deceitfully, the consequence is that no one will care for you or value you. When your life ends, you will not attain enlightenment, but will only increase your delusion.”
From then on, Rahula changed his mischievous ways, strictly observed the precepts, and diligently practiced the path.
According to the teachings of the Buddhist sutras, we should take a long-term view and consider the consequences of lying for both this life and future lives.

In this life, if we frequently lie, deceive, or slander others, we will inevitably face retaliation from those we have wronged. In the mundane world, most people are naturally inclined to protect themselves and have a tendency for “an eye for an eye” revenge, unless they are saints who have subdued their own minds. If we deceive others, the victims, unwilling to be deceived, will expose our misdeeds among people. As word spreads from one to ten and from ten to a hundred, our bad reputation will quickly become widespread. Our credibility will be utterly destroyed, and our trustworthiness will plummet. From then on, even if we speak the truth, it will be seen as a lie, and people will be wary of us to avoid being deceived. No one will trust us. In such a predicament, we will constantly feel the pain of isolation and helplessness. Our lives will shrink, and our careers will suffer as a result.
In future lives, under the influence of the dark karma of lying, one will inevitably fall into the three lower realms. When the bad karma diminishes and one is reborn as a human, the residual effects of lying will manifest in various speech-related congenital obstacles in both body and mind. These may include having an impaired tongue root, stuttering, or unclear speech. Additionally, there will be a habitual tendency to lie, and sometimes, even when one wishes to speak the truth, it will come out as a lie involuntarily. In interactions with others, one will frequently be slandered and deceived. Even when speaking the truth, people will not believe it. Moreover, even when preaching the true Dharma, others will be unwilling to listen.
Link:https://peacelilysite.com/2024/06/13/the-consequences-of-lying-a-lesson-from-buddhist-teachings/
Source: https://fo.china.com/m/fostory/20001207/20231107/25809400.html
