This may not be a true incident. BUt the spirit of this parable is Great.

1 But Jesus went to the Mount of Olives. 

2 And early in the morning He came again into the temple, and all the people were coming to Him; and He sat down and began to teach them. 

3 And the scribes and the Pharisees *brought a woman caught in adultery, and having set her in the midst, 

4 they *said to Him, "Teacher, this woman has been caught in adultery, in the very act. 

5 "Now in the Law Moses commanded us to stone such women; what then do You say?" 

6
And they were saying this, testing Him, in order that they might have
grounds for accusing Him. But Jesus stooped down, and with His finger
wrote on the ground. 

7 But when they persisted in asking Him, He straightened up, and said to them,
"He who is without sin among you, let him be the first to throw a stone at her." 

8 And again He stooped down, and wrote on the ground. 

9 And when they heard it, they began to go out one by one, beginning with the older ones, and He was left alone, and the woman, where she was, in the midst. 

10 And straightening up, Jesus said to her, "Woman, where are they? Did no one condemn you?" 

11 And she said, "No one, Lord." And Jesus said, "Neither do I condemn you; go your way. From now on sin no more."