Explanation of the hadith
The noble Hadīth explains that the Muezzin is more entitled to determine the time of calling the Adhān, and that the Imām is more entitled to determine the time of calling the Iqāmah.
The Muezzin is responsible for the Adhān, and the leader of the congregation is responsible for the Iqāmah
Authentic hadithIbn Abi Shaybah - Al-Bayhaqi - ‘Abdur-RazzaaqHadeethEnc #10633
عن علي رضي الله عنه مرفوعاً: «المؤذن أملك بالأذان، والإمام أملك بالإقامة».
English translation
‘Ali (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "The Muezzin is responsible for the Adhān, and the leader of the congregation is responsible for the Iqāmah."
The Azan and Iqaamah