1 Samuel 20:26

And Saul said nothing that day; for he thought, Something has befallen him, that he is not clean: surely he is not clean.

Leviticus 15:5

And whoever toucheth his bed shall wash his garments, and bathe in water, and be unclean until the even.

Leviticus 11:24

And by these ye shall make yourselves unclean; whoever toucheth their carcase shall be unclean until the even.

Leviticus 11:27

And whatever goeth on its paws, among all manner of beasts that go upon all four, those are unclean unto you: whoever toucheth their carcase shall be unclean until the even.

Leviticus 7:20-21

But the soul that eateth the flesh of the sacrifice of peace-offering which is for Jehovah, having his uncleanness upon him, that soul shall be cut off from his peoples.

Leviticus 11:31

These shall be unclean unto you among all that crawl: whoever toucheth them when they are dead, shall be unclean until the even.

Leviticus 11:40

And he that eateth of its carcase shall wash his garments, and be unclean until the even: he also that carrieth its carcase shall wash his garments, and be unclean until the even.

Leviticus 15:16-17

And if any man's seed of copulation pass from him, then he shall bathe his whole flesh in water, and be unclean until the even.

Leviticus 15:19-21

And if a woman have a flux, and her flux in her flesh be blood, she shall be seven days in her separation, and whoever toucheth her shall be unclean until the even.

Numbers 19:16

And every one that toucheth one that is slain with a sword in the open fields, or a dead person, or the bone of a man, or a grave, shall be unclean seven days.

1 Samuel 16:5

And he said, Peaceably: I am come to sacrifice to Jehovah. Hallow yourselves, and come with me to the sacrifice. And he hallowed Jesse and his sons, and called them to the sacrifice.

Treasury of Scripture Knowledge

Summary

Nevertheless Saul spake not any thing that day: for he thought, Something hath befallen him, he is not clean; surely he is not clean.

Bible References

He is not clean

Leviticus 7:21
And if any one touch anything unclean, the uncleanness of man, or unclean beast, or any unclean abomination, and eat of the flesh of the sacrifice of peace-offering, which is for Jehovah, that soul shall be cut off from his peoples.
Leviticus 11:24
And by these ye shall make yourselves unclean; whoever toucheth their carcase shall be unclean until the even.
Leviticus 15:5
And whoever toucheth his bed shall wash his garments, and bathe in water, and be unclean until the even.
Numbers 19:16
And every one that toucheth one that is slain with a sword in the open fields, or a dead person, or the bone of a man, or a grave, shall be unclean seven days.