Reciting the Talbiyah in unison, when the people doing Hajj or ‘umrah all start to recite it together and end it together in one voice is one of the mistakes that many people commit today.

According to the consensus of scholars, the intention of doing Wudu or Ghusl, of praying, fasting, paying Zakah, and other acts of worship does not need to be uttered verbally. Rather the place of intention is the heart.