restraining her is restraining the wind, or catching oil in your right hand.
In context
14Whoever blesses his neighbor in a loud voice, rising early in the morning—it will be counted a curse to him. 15A constant dripping on a day of steady rain and a quarrelsome wife are alike: 16restraining her is restraining the wind, or catching oil in your right hand. 17Iron sharpens iron, and one man sharpens the face of another. 18Whoever tends a fig tree will eat its fruit, and whoever guards his master will be honored.
