John 8:5-7

5 Now Moses in the law commanded us that such should be stoned, but what sayest thou?

6 This they said, tempting him, that they might be able to accuse him. But Jesus stooped down and with [his] finger wrote on the ground.

7 So when they continued asking him, he lifted himself up and said unto them, He that is without sin among you, let him [be] the first to cast a stone at her.