Likutei Moharan 69:9/ליקוטי מוהר"ן ס״ט:ט׳

19. This is what our Sages, of blessed memory, taught: Whoever marries a woman for money will have disreputable children (Kiddushin 70a) .

2When a person marries for money, making money his goal, he is an idiot and a fool, for “A wise man’s heart is at his right, while a fool’s heart is at his left” (Ecclesiastes 10:2). That is, when someone wise marries, he turns to his right—i.e., to the Torah, which corresponds to the right, as it is written (Deuteronomy 33:2), “from His right hand He presented the fiery Law to them.” In other words, he marries a woman for the sake of Torah; that he might study Torah in purity, as our Sages, of blessed memory, said: One who wants to study Torah in purity should take a wife… (Menachot 110a) .

3But “a fool’s heart is at his left.” He marries a woman for money, which corresponds to the left, as it is written (Proverbs 3:16), “and in her left hand, wealth and honor.” Thus we see that when he marries for money, he is a fool. He blemishes and loses his wisdom. As a result, “he will have disreputable children”—on account of his having blemished daat, the source of children.