A 10-year-old boy was hospitalized after being stabbed in the shoulder and hand by a woman on a San Francisco bus, police said Friday.

The boy, a fifth-grader, and the suspect, a 27-year-old woman, got into a “verbal argument” on Muni’s 23-Monterey bus near Palou Avenue and Jennings Street at around 3 p.m. Thursday, said Officer Albie Esparza, a police spokesman.