Reb Chaim Palagi zt’l (Kaf HaChaim 27:35) writes, “I affirm that every household that has a machlokes (argument) on Friday afternoon or on Friday night, it is certain, proven, and true that something bad will happen to them during the week. Check it and you will see that it is so,” because they lack the blessings that come from Shabbos.

The Ben Ish Chai adds that if someone in your home does something wrong on Friday regarding Shabbos preparations and the like, don’t be angry with them, because it isn’t their fault. The Satan caused them to make that error, to provoke a machlokes on Friday.

Don’t fall for it!