'Mud' in the Bible

After saying this, he spit on the ground and made mud with the saliva. Then he spread the mud on the man's eyes

He said, "The man named Jesus made some mud, spread it on my eyes, and told me, "Go to Siloam and wash.' So off I went and washed, and I received my sight."

Now it was a Sabbath day when Jesus made the mud and healed his eyes.

So the Pharisees also began to ask him how he had gained his sight. He told them, "He put mud on my eyes, then I washed, and now I can see."

The proverb is true that describes what has happened to them: "A dog returns to its vomit," and "A pig that is washed goes back to wallow in the mud."