Q 1: I am an Imam of one of the Masjids (mosques) known as Masjids Al-Jami` (the large mosques where Jumu`ah [Friday] Prayers are held). I have little knowledge. Once, one of the preachers
stood before the worshippers and said: "When one enters a Masjid and attends Ruku' (bowing) with the Imam in congregational Salah, he should pronounce two Takbirs; one for starting Salah and the other for Ruku'." Should one perform one or two Takbirs upon attending Ruku' with the Imam? May Allah reward you and guide you to the truth.
The Ma'mum (person being led by an Imam in Prayer) should, when joining Salah while the Imam is performing Ruku', (Part No. 6; Page No. 342) say one Takbir for starting Salah while he is in a standing position. He is not required to say another Takbir, but it will be better if he says one Takbir for starting Salah and another one for Ruku'.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.