Mark 1:41

And Jesus, moved with compassion
At the sad and deplorable case the poor man was in, being a merciful high priest, and not with a desire of popular applause, and vain glory:

put forth his hand and touched him;
though the leprosy was spread all over him, and there was no place clean, and touching him was forbidden by the law:

and saith unto him, I will be thou clean; (See Gill on Matthew 8:3).