Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that when the Messenger of Allah (peace be upon him) would stand up for the second rak‘ah, he would start the recitation from « الْحَمْدُلِلَّهِرَبِّالْعَالَمِينَ » and would not pause.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب قيام المأمومين خلف الإمام وما فيه من السنن / 1603