Proverbs 2:7-17
7 He grants a treasure of common sense to the honest. He is a shield to those who walk with integrity.
8 He guards the paths of the just and protects those who are faithful to him.
9 Then you will understand what is right, just, and fair, and you will find the right way to go.
10 For wisdom will enter your heart, and knowledge will fill you with joy.
11 Wise choices will watch over you. Understanding will keep you safe.
12 Wisdom will save you from evil people, from those whose words are twisted.
13 These men turn from the right way to walk down dark paths.
14 They take pleasure in doing wrong, and they enjoy the twisted ways of evil.
15 Their actions are crooked, and their ways are wrong.
16 Wisdom will save you from the immoral woman, from the seductive words of the promiscuous woman.
17 She has abandoned her husband and ignores the covenant she made before God.
Not sure what translation you use here, but I don't think "common sense" is a very good translation for "sound wisdom". The two are not necessarily the same thing.
Proverbs 2:7-17 (KJV) He layeth up sound wisdom for the righteous: he is a buckler to them that walk uprightly. He keepeth the paths of judgment, and preserveth the way of his saints. Then shalt thou understand righteousness, and judgment, and equity; yea, every good path. When wisdom entereth into thine heart, and knowledge is pleasant unto thy soul; Discretion shall preserve thee, understanding shall keep thee: To deliver thee from the way of the evil man, from the man that speaketh froward things; Who leave the paths of uprightness, to walk in the ways of darkness; Who rejoice to do evil, and delight in the frowardness of the wicked; Whose ways are crooked, and they froward in their paths: To deliver thee from the strange woman, even from the stranger which flattereth with her words; Which forsaketh the guide of her youth, and forgetteth the covenant of her God.