One should not stand for As-Salat (the prayer) hurriedly but with calmness and solemnity.
باب لاَ يَسْعَى إِلَى الصَّلاَةِ مُسْتَعْجِلاً، وَلْيَقُمْ بِالسَّكِينَةِ وَالْوَقَارِ
Sahih al-Bukhari, Book of Call to Prayers (Adhaan)(view book)
Sahih al-Bukhari 638
Narrated 'Abdullah bin Abi:
Qatada, My father said, "Allah's Apostle ﷺ 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.' "
حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا شَيْبَانُ، عَنْ يَحْيَى، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي قَتَادَةَ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " إِذَا أُقِيمَتِ الصَّلاَةُ فَلاَ تَقُومُوا حَتَّى تَرَوْنِي وَعَلَيْكُمْ بِالسَّكِينَةِ ". تَابَعَهُ عَلِيُّ بْنُ الْمُبَارَكِ.
Classification
Sahih (Authentic)