7 “When He had thus spoken, He spat on the ground, and made clay of the spittle, and He spread the clay upon his eyes, and said unto him, Go and wash in the pool of Siloam (which is, by interpretation, Sent). He went his way therefore, and washed, and came seeing.” As these words are clear, we may pass them over.
Source: Tractates on the Gospel of John (New Advent)