Abdullah b. Abu Qatada reported on the authority of his father:
While we said our prayer with the Messenger of Allah (ﷺ) he heard tumult. (At the end of the prayer) he (the Holy Prophet) said: What is the matter with you? They said: We hastened to prayer. He (the Holy Prophet) said: Don't do that; when you come for prayer, there should be tranquillity upon you. Pray (along with the Imam) what you can find and complete what preceded you.
Reference: Sahih Muslim 603 a In-book : Book 5, Hadith 198 USC-MSA web (English) : Book 4, Hadith 1253 (deprecated)
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