1 Samuel 20:26

And Saul hath not spoken anything on that day, for he said, 'It is an accident; he is not clean -- surely not clean.'

Leviticus 15:5

and any one who cometh against his bed doth wash his garments, and hath bathed with water, and been unclean till the evening.

Leviticus 11:24

'And by these ye are made unclean, any one who is coming against their carcase is unclean till the evening;

Leviticus 11:27

And any one going on its paws, among all the beasts which are going on four -- unclean they are to you; any one who is coming against their carcase is unclean until the evening;

Leviticus 7:20-21

and the person who eateth of the flesh of the sacrifice of the peace-offerings which are Jehovah's, and his uncleanness upon him, even that person hath been cut off from his people.

Leviticus 11:31

these are the unclean to you among all which are teeming; any one who is coming against them in their death is unclean till the evening.

Leviticus 11:40

and he who is eating of its carcase doth wash his garments, and hath been unclean till the evening; and he who is lifting up its carcase doth wash his garments, and hath been unclean till the evening.

Leviticus 15:16-17

'And when a man's seed of copulation goeth out from him, then he hath bathed with water all his flesh, and been unclean till the evening.

Leviticus 15:19-21

And when a woman hath an issue -- blood is her issue in her flesh -- seven days she is in her separation, and any one who is coming against her is unclean till the evening.

Numbers 19:16

'And every one who cometh, on the face of the field, against the pierced of a sword, or against the dead, or against a bone of man, or against a grave, is unclean seven days;

1 Samuel 16:5

and he saith, 'Peace; to sacrifice to Jehovah I have come, sanctify yourselves, and ye have come in with me to the sacrifice;' and he sanctifieth Jesse and his sons, and calleth 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 when a person cometh against any thing unclean, of the uncleanness of man, or of the uncleanness of beasts, or of any unclean teeming creature, and hath eaten of the flesh of the sacrifice of the peace-offerings which are Jehovah's, even that person hath been cut off from his people.'
Leviticus 11:24
'And by these ye are made unclean, any one who is coming against their carcase is unclean till the evening;
Leviticus 15:5
and any one who cometh against his bed doth wash his garments, and hath bathed with water, and been unclean till the evening.
Numbers 19:16
'And every one who cometh, on the face of the field, against the pierced of a sword, or against the dead, or against a bone of man, or against a grave, is unclean seven days;