1 Samuel 20:26

Saul, however, spake nothing that day, - for he said to himself - It is, an accident, he is, not clean, because he hath not been cleansed.

Leviticus 15:5

And whosoever toucheth his bed shall wash his clothes and bathe in water and be unclean until the evening.

Leviticus 11:24

and, for these, shall ye count yourselves unclean - whosoever toucheth the carcase of them shall be unclean until the evening;

Leviticus 11:27

And, all that go upon their paws, among all the living things that go on all-fours, unclean, they are unto you, - whoso toucheth the carcase of them, shall be unclean until the evening.

Leviticus 7:20-21

But as for the person who shall eat flesh from the peace-offering, which pertaineth unto Yahweh, while his uncleanness is on him, then shall that person be cut off from among his kinsfolk.

Leviticus 11:31

These, are they which are unclean to you among all that creep, - whosoever toucheth them when they are dead shall be unclean until the evening;

Leviticus 11:40

And, he that eateth of the carcase of it, shall wash his clothes, and be unclean until the evening, - he also that carrieth away the carcase thereof shall wash his clothes, and be unclean until the evening.

Leviticus 15:16-17

And, when there goeth out from, any man, an outflow of seed, then shall he bathe all his flesh in water, and be unclean until the evening.

Leviticus 15:19-21

And, when a, woman, hath a flow, and her flow in her flesh is, blood, seven days, shall she continue in her removal, and whosoever toucheth her, shall be unclean until the evening;

Numbers 19:16

And, whosoever toucheth on the face of the field, one slain with a sword, or one who hath died, or a human bone or a grave, shall be unclean seven days.

1 Samuel 16:5

And he said - Peaceably: to sacrifice unto Yahweh, am I come. Hallow yourselves, and come with me to the sacrifice. And he hallowed Jesse and his sons, and bade 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
Yea, as for, any person, whensoever he shall touch anything unclean - the uncleanness of man or an unclean beast, or any unclean disgusting thing, - and then eateth of the flesh of a peace-offering that pertaineth unto Yahweh, then shall that person be cut off from among his kinsfolk.
Leviticus 11:24
and, for these, shall ye count yourselves unclean - whosoever toucheth the carcase of them shall be unclean until the evening;
Leviticus 15:5
And whosoever toucheth his bed shall wash his clothes and bathe in water and be unclean until the evening.
Numbers 19:16
And, whosoever toucheth on the face of the field, one slain with a sword, or one who hath died, or a human bone or a grave, shall be unclean seven days.