By adulthood it was said that Rahula had reached enlightenment under his father’s guidance.
One evening, after meditation, the Buddha went to speak to his son, Rāhula. Seeing his father coming, seven year old Rāhula got a seat ready and got water for washing the feet. The Blessed One sat down on the seat and washed his feet. Rāhula sat to one side.
After washing, the Buddha said to Rāhula, “Do you see, Rāhula, this small quantity of water left in the bowl?”
“Yes, Lord.”, Rāhula replied.
“Similarly, Rāhula, insignificant indeed is the spiritual life of those who are not ashamed of uttering deliberate lies.”
The Buddha threw away the water.
“Did you see, Rāhula, that small quantity of water, thrown away?”
“Similarly, Rāhula, discarded indeed is the spiritual life of those who are not ashamed of deliberate lying.”
Then the Blessed One turned the bowl upside down and then set the bowl upright on the table.
“Do you see, Rāhula, this bowl, empty and void”?
“Similarly, Rāhula, empty and void indeed is the spiritual life of those who are not ashamed of deliberate lies.”
“When someone is not ashamed to tell a deliberate lie, there is no evil that he or she would not do. Therefore, Rāhula, train yourself to not utter a lie even as a joke.”
“What do you think, Rāhula; for what purpose is a mirror?”
“For the purpose of reflecting, Lord”
“Similarly, Rāhula, you should reflect on your actions to see if they are fit or unfit. Bodily action, verbal action, and mental action should be reflected on.
“Before you do an action, Rāhula, you should reflect: ‘Will this action lead to my own harm, or the harm of others, or both?
If the answer is yes then on no account should you perform the action.
“If, on the other hand, Rāhula, you think the action will not cause harm then feel free to do it.
When you are doing the action, reflect: ‘Now, is this action I am doing causing harm or suffering to me, others, or both?’
If the answer is yes, Rāhula, you must stop doing it.
“If, on the other hand, Rāhula, you think the action is not causing harm or suffering then continue to do it if you wish.”
“After you have done something, Rāhula, you should reflect: ‘Now, did my actions cause harm or suffering?”
If the answer is yes it should be confessed to a Teacher or a wise person. After confessing you should resolve not to do it again.
“If, on the other hand, Rāhula, you think your actions caused no harm or suffering then you should be happy and train yourself to do such things again and again!”
“This is how you should train yourself, Rāhula. By constantly reflecting we can purify our bodily actions; by constantly reflecting we can purify our verbal actions; by constantly reflecting we can purify our mental actions.”
Delighted, Rāhula rejoiced at his words.