The ruling on a latecomer standing up to make up what he missed after the imam’s first taslim and before the second

Question:
Among the questions we have received, and we hope you will shed light on it, is this one from the questioner. He says: Honorable Shaykh Salih, what is your view regarding what some of the praying congregation do, where some of them stand up to complete their prayer after the imam’s first taslim and before his second?

Answer:
In the obligatory prayer, this is not permissible until the imam has completed his second taslim, and then the latecomer stands up. No, no, no. They say that if the latecomer stands up after the first taslim and does not wait for the second taslim, his obligatory prayer becomes a voluntary prayer, and this is dangerous because of haste. Yes.