Contrary to the statement of the person who says that when two prayers are combined in the time of the second prayer, only the iqamah will be said for both and the adhan will not be given.

Sayyiduna Usama bin Zaid (may Allah be pleased with them both) narrates that I returned from Arafat with the Messenger of Allah (peace be upon him). When he reached the valley where the leaders and rulers descend, he dismounted there, urinated, and performed ablution. I said, "O Messenger of Allah, do you wish to pray?" He replied, "We will perform the prayer ahead." Then when he reached Muzdalifah, he had the call to prayer (adhan) given, and the iqamah was pronounced, and the Messenger of Allah (peace be upon him) performed the Maghrib prayer. Then, before the people had even untied their mounts, the iqamah was pronounced again and he led the 'Isha prayer. There is also a narration from Jabir bin Muhammad regarding this issue.