Sayyiduna Ma'qil bin Yasar (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Any people among whom the adhan is called in the morning remain under the protection of Allah until the evening, and any people among whom the adhan is called in the evening remain under the protection of Allah until the morning."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17632