The manner in which one who is led in prayer by an Imam must follow him, and the rule applying to the one who is preceded by him - Section 3

Mishkat al-Masabih · Book 4 · Hadith 1148

وَعَن أبي هُرَيْرَة أَنَّهُ كَانَ يَقُولُ: «مَنْ أَدْرَكَ الرَّكْعَةَ فَقَدْ أَدْرَكَ السَّجْدَةَ وَمَنْ فَاتَتْهُ قِرَاءَةُ أُمِّ الْقُرْآنِ فقد فَاتَهُ خير كثير» . رَوَاهُ مَالك

Abu Huraira used to say: If one is in time for the rak'a he is credited with the sajda, but if one misses the recitation of Umm al- Qur'an (Al-Qur’an; 1) a great amount of good has passed him by. Malik transmitted it.

Mishkat al-Masabih · Book 4 · Hadith 1149

وَعنهُ قَالَ: الَّذِي يَرْفَعُ رَأْسَهُ وَيَخْفِضُهُ قَبْلَ الْإِمَامِ فَإِنَّمَا ناصيته بيد الشَّيْطَان ". رَوَاهُ مَالك

He said: If anyone raises and lowers his head before the imam, his forelock is in the devil’s hand. Malik transmitted it.