In the 3rd Test of New Zealand's 2022 tour of England, Jack Leach took the Wicket of Will Young with his first ball in the 13th over of the match.
Generally in Tests, and especially in England, spin bowlers are normally introduced into the game at a much later time than the 13th over - perhaps an exploratory over just before Lunch - when there are rough patches for them to aim at; so a spinner taking a Wicket this early in a Test Match is somewhat unusual.
What is the earliest time (in terms of balls bowled) has a spinner taken a Wicket in a Test Match?
For clarification, I am talking about the first innings of a Test Match, as I am aware that Ravi Ashwin has taken a Wicket with the very first ball of an innings, though that was in the batting team's second innings, third innings overall.