Police seek man with golf trolley after teens attack Paisley couple
The 37-year-old husband is in a stable condition in hospital after two youths broke into the house in Paisley's Saucelhill Terrace.
His wife, 38, was also injured in the incident, which police described as an "appalling crime".
Officers said they were keen to hear from a man who was seen walking along South Campbell Street, just outside Charleston doctors surgery, at about 5am on Friday.
He was pulling a golf trolley behind him, was wearing dark clothing and had white hair. The woman was confronted by two men in dark clothing when she got out of bed.
She screamed, waking her husband, who went to help her. One of the housebreakers struck the woman with a knife, leaving a severe cut on her wrist.
She ran downstairs but was followed by the intruders. Her husband then grabbed one of the men, but was attacked by the intruders and stabbed a number of times.
The culprits fled and the couple were taken to Royal Alexandra Hospital in Paisley, with both needing surgery. The suspects are white men, aged between 17 and 19.