A woman was slashed while waiting for a Manhattan subway train after telling her assailant to stop staring at her, police said. The 28-year-old woman was standing on the northbound C train platform at the 50th St. subway station in Hell’s Kitchen around 3:10 a.m. Tuesday when she noticed a man staring at her and told him to stop. The man then went up to the victim and slashed her in the torso with an unknown object, police said. The man fled and is still being sought by police. The victim was transported to Bellevue Hospital in stable condition. Cops released images and video of the person of interest, depicting a man walking up a sidewalk wearing yellow pants, a blue shirt and holding a duffle bag. Anyone with information is asked to call Crime Stoppers at (800) 577-TIPS. All tips are confidential.