Sayyiduna Uqbah bin Amr (may Allah be pleased with him) said: A man came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah, I hold back from the Fajr prayer because of so-and-so, who leads us in long prayers. I never saw the Prophet (peace and blessings be upon him) angrier in any admonition than he was that day. He (peace and blessings be upon him) said: "O people, among you are some who drive people away. Whoever of you leads the people in prayer should keep it light, for among them are the weak, the old and the one with a need."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14629