Hadith 1149
Mishkat al-Masabih
Prayer · 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
Arabic
وَعنهُ قَالَ: الَّذِي يَرْفَعُ رَأْسَهُ وَيَخْفِضُهُ قَبْلَ الْإِمَامِ فَإِنَّمَا ناصيته بيد الشَّيْطَان ". رَوَاهُ مَالك
English translation
He said: If anyone raises and lowers his head before the imam, his forelock is in the devil’s hand. Malik transmitted it.