What do we learn from "Tovim ha'Shenayim Min ha'Echad"?
Rav Sadya Gaon, Rashbam, Rid, Metzudas David: They have a good profit in what they engage in.
Rashi: For every matter, two are better. Therefore, one should acquire a friend and marry a wife. Many tasks are done with two, that one person cannot begin it by himself.
Ibn Ezra: This refers to a Kesil. It would be better if he had someone to help him. Then, they would have a good reward for their toil - food and drink.
Ri Kara: It is good to marry a woman. He will have "Sechar Tov", i.e. children - "Nachalas Hashem Banim Sechar Peri ha'Beten" (Tehilim 127:3).
R. Avigdor: Two who learn Torah together are better than when each learns by himself. Seforno - this is one of the evils that I saw in Galus. People learn by themselves.
What is "Sechar Tov"?
Rashbam, Metzudas David: It is a big profit.
Ri Kara: It is good to marry a woman. He will have "Sechar Tov", i.e. children - "Nachalas Hashem Banim Sechar Peri ha'Gefen" (Tehilim 127:3).