عن أنس رضي الله عنه قال: قال رسول الله ﷺ: «لا يُرد الدعاء بين الأذان والإقامة».
Anas (may Allah be pleased with him) reported: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "Supplication between the Adhān and the Iqāmah is not rejected."
This noble Hadīth says that one of the times during which supplications are readily answered is the time between the Adhān and the Iqāmah, whether the supplicant is inside the mosque or elsewhere.