ANSWER:

Adding “wa barakatuhu ” is an issue of dispute, but the most authentic opinion is not to add it. Your prayer however is valid. 

If the imam says the tasleem regularly but without thinking I added “wa barakatuhu” afterwards. Is my prayer still valid? Since I added something additional I thought I needed to repeat the prayer

Prayer | July 18, 2022 4:41 am
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We do jalsatul istiraha before 2nd & 4th rakah. But in case of Witr when we pray with one tasleem without sitting after 2nd rakah, can we do jalsatul istiraha before getting up for 3rd rakah?