Is it permissible for an Imam to stand up after reciting the first Tashahhud (testification recited in the sitting position in the second unit of Prayer) when he knows that the Ma'mums (persons being led by an Imam in Prayer) are still reciting it? Should he wait for them?
The Imam should sit when reciting the first Tashahhud for a period of time that is sufficient for him to do that. It is better for him to ask Allah (Exalted be He) to send peace and blessings upon the Prophet (peace be upon him) after reciting the Tashahhud. Then, he should stand to perform the third Rak`ah (unit of prayer). If he does that, the Ma'mums will have enough time to recite the Tashahhud.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.