Acts 21:29

Trophimus the Ephesian was Paul’s travelling companion from Asia (Acts 20:4) The Asian Jews had previously seen them together in the city and had assumed that Paul had brought this Gentile into the sacred enclosure of the Temple.

"The possibility that Trophimus might have wandered of his own freewill into the forbidden area is about as likely as that somebody should wander into private rooms in the Kremlin for the purpose of sightseeing." [Note: Marshall, The Acts . . ., p. 348.]