Cairo Police say the assault happened at 690 North Washington Drive around 2:30 Saturday afternoon.
Authorities say William Knight and his wife of thirty years Shirley had gotten into an argument about divorce.
That's when police say William cut Shirley's throat and she ran outside for help.
She was taken to Grady General Hospital and is now in stable condition.
Cairo Police arrested William Sunday night at the Grady Lodge motel.
He is charged with aggravated assault and remains in Grady County Jail.
Bond was set at 50,000 dollars.