The table below presents an aligned extract of verses or verselets in Nu05-13c, Lv05-04. Both verses/verselets discuss offerings brought on hidden or unknown matters. The alignment justifies the Rashi assertion that For an ordinary sin offering we require the matter was hidden and unknown. For an adulterous-woman-sin-offering we require more strongly that the matter was hidden from his eyes and unknown. The extra emphasis indicated by hidden from his eyes implies a requirement that a) he is not blind, b) he was unaware of his wife's misbehavior and c) there was no overlooking (he didn't see something unseemly and ignore it).

Verse	Text of Verse	Rashi comment
Nu05-13c	And a man lies with her carnally, and it is hidden from the eyes of her husband, and this is kept undetected, and she is defiled, and there is no witness against her, since she was not caught in the act;	For an ordinary sin offering we require the matter was hidden and unknown. For an adulterous-woman-sin-offering we require the matter was hidden from his eyes and unknown. The extra emphasis indicated by hidden from his eyes implies a requirement that a) he is not blind, b) he was unaware of his wife's misbehavior and c) there was no overlooking (he didn't see something unseemly and ignore it).
Lv05-04	Or if a soul swears, pronouncing with his lips to do evil, or to do good, whatever it is that a man shall pronounce with an oath, and it is hidden from him; when he knows of it, then he shall be guilty in one of these.	For an ordinary sin offering we require the matter was hidden and unknown. For an adulterous-woman-sin-offering we require the matter was hidden from his eyes and unknown. The extra emphasis indicated by hidden from his eyes implies a requirement that a) he is not blind, b) he was unaware of his wife's misbehavior and c) there was no overlooking (he didn't see something unseemly and ignore it).