The ruling on moving from one obligatory prayer to another by performing the takbir of ihram

Question : Now, if he moves from one obligatory prayer to another by performing the takbir of ihram, meaning he says the takbir for entering the state of ihram in the second prayer.

Answer : Yes, and which one is valid? The first or the second? The second is valid, and the first is invalid because he invalidated it. That is clear.