وَلَا يُجْزِئُ أَذَانٌ قَبْلَ الْوَقْتِ بَلْ يُعَادُ فِي الْوَقْتِ
An Adhan called before the prayer time has entered does not count for that prayer under this rule and is repeated after the time enters.
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Adhan before the Prayer Time
Adhan and Iqamah: Legal Status and Where They Are Prescribed
وَلَا يُجْزِئُ أَذَانٌ قَبْلَ الْوَقْتِ بَلْ يُعَادُ فِي الْوَقْتِ
An Adhan called before the prayer time has entered does not count for that prayer under this rule and is repeated after the time enters.