Over and over we hear the same question. The answer is still a resounding no.
First of all, Scrum Guide clearly defines Scrum Master as a separate role. If that is not enough, or the argument is that we can adapt and change the process to suit our circumstances, you should ask yourself a question: “what role Scrum Master performs?”
Scrum Master is a mediator and a facilitator. To perform both roles, he needs to have no stake in the outcome. So, SM cannot be a part of the team that is doing the work - otherwise you get a conflict of interest.
If you are really short on people, a good idea might be to use a member of some other team to serve as a Scrum Master. Just make sure he has no real stake in the outcome of the team’s work.