The boy appeared in court in the city of Lahore Saturday, sitting on his grandfather's lap and drinking from a bottle of milk, according to television pictures.
He was charged along with his family last week after a mob protesting against gas cuts and price increases stoned police and gas company workers trying to collect overdue bills.
The baby was apparently charged because an assistant sub-inspector complained in a crime report that Musa's whole family had beaten him up and injured his head.
The baby's grandfather, Muhammad Yasin, and his three sons still face the charges, but the young boy will not, officials told the family. "Police told the court that the nomination of Musa in the case of attacking police and gas company officials was a human error and Musa is not required," defense lawyer Irfan Sadiq told Reuters.
The BBC reported that the boy’s grandfather asked journalists covering the case: "He doesn't even know how to pick up his milk bottle properly. How can he stone the police?"
Pictures taken at an earlier court hearing of Musa crying as he was being fingerprinted prompted officials to call for an inquiry.