Leviticus 4:23

Or if his sin, wherein he hath sinned, come to his knowledge; he shall bring his offering, a kid of the goats, a male without blemish:

if his sin, in which he has sinned, is made known to him, he shall bring as his offering a goat, a male without blemish.

if his sin, wherein he hath sinned, be made known to him, he shall bring for his oblation a goat, a male without blemish.

or his sin wherein he hath sinned hath been made known unto him, then he hath brought in his offering, a kid of the goats, a male, a perfect one,

When he becomes aware of the sin he has committed, he must bring an unblemished male goat as his offering.