Which Pharisee asked, "Does our law convict a man without first hearing from him?"

Answer: Nicodemus

Nicodemus, who had come to Jesus earlier and was one of the Pharisees, defended a fair hearing for Jesus.

“Nicodemus, who had gone to Jesus earlier and who himself was one of them, asked, “Does our law convict a man without first hearing from him to determine what he has done?””— John 7:50-51 (BSB)