Is it from the Sunnah to say 'Rabana wa lakal hamd' loudly? - Yasir Qadhi | 4th January 2013

When the Imam in Makkah is leading Salah we hear a voice repeating after the Imam raises from Ruku saying 'Rabana wa lakal hamd' loudly - Is this practice from the Sunnah? Where did this practice originate from and what is the wisdom behind it?

Shaykh Yasri Qadhi answers on saying 'Rabana wa lakal hamd' loudly after the Imam in Makkah?

Recorded on 4th January 2013 on Islam Channel UK