Narrated Abu Huraira: heard Allah's Apostles (p.b.u.h) saying, "If the prayer is started do not run for it but just walk for it calmly and pray whatever you get, and complete whatever is missed. "

Narrated `Abdullah bin Abi Qatada: My father said, "While we were praying with the Prophet he heard the noise of some people. After the prayer he said, 'What is the matter?' They replied 'We were hurrying for the prayer.' He said, 'Do not make haste for the prayer, and whenever you come for the prayer, you should come with calmness, and pray whatever you get (with the people) and complete the rest which you have missed."

Narrated Abu Huraira: The Prophet said, "When you hear the Iqama, proceed to offer the prayer with calmness and solemnity and do not make haste. And pray whatever you are able to pray and complete whatever you have missed.

Narrated `Abdullah bin Abi Qatada: My father said, "Allah's Apostle said, 'If the Iqama is pronounced, then do not stand for the prayer till you see me (in front of you) and do it calmly.' "