It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that when the iqamah for the prayer was called for the Messenger of Allah (peace and blessings be upon him), the people would stand in their places before the Prophet (peace and blessings be upon him) came to his place.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2284