Hadith 17537
It is narrated from Hazrat Ziyad bin Harith (may Allah be pleased with him) that once he gave the adhan. At the time of iqamah, Hazrat Bilal (may Allah be pleased with him) intended to say the iqamah, so the Prophet (peace and blessings be upon him) said, "O caller brother! The person who gives the adhan should also say the iqamah."
Hadith 17538
It is narrated from Hazrat Ziyad bin Harith (may Allah be pleased with him) that once at the time of dawn, the Prophet (peace and blessings be upon him) ordered him to give the adhan, so I gave the adhan. When the Prophet (peace and blessings be upon him) performed ablution and stood for prayer, at the time of iqamah, Hazrat Bilal (may Allah be pleased with him) intended to say the iqamah. The Prophet (peace and blessings be upon him) said, "Let your brother who gave the adhan say the iqamah, because the one who gives the adhan should also say the iqamah."