Sahih Muslim Book 4, Hadith Number 1259.

Chapter : Desirability of going to prayer with dignity and tranquillity and forbiddance of going to it in hot haste.

Jabir b. Samura reported: Bilal summoned to prayer as the sun declined but did not pronounce Iqama till the Apostle of Allah (may peace be upon him) came out and the Iqama was pronounced on seeing him.