It appears that both is OK as there isn’t anything specific on this issue.

During Tashahud in prayer, we have to form an arc of a circle using our fingers, but when do we let our fingers go to normal poistion again—is it after the first Tasleem, or after both Tasleems?

Prayer | March 26, 2014 1:32 pm
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During Tashahudd, exactly when should we raise the index finger?
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The masjid imam in our community pray zuhar as usual and then pray two rakah for Asr as combining the two salat during rain. Although the rain had stopped and the sun was almost out, the imam still combined two salats. The question I have is that he pray four rakah for zuhar and then two rakah for Asr? I only know that one must pray four rakah each salat even when combing for rain. Is the two rakah for Asr ok? should I repeat Asr and pray four rakah?