Hazrat Samurah bin Jundub (may Allah be pleased with him) once said during a sermon that the Messenger said: Do not be deceived by Bilal’s call to prayer or this whiteness, until the true dawn appears. The true dawn is the light that spreads horizontally across the horizon.
Hadith Referenceمسند احمد / أول مسند البصريين / 20158
Hadith Gradingحکم دارالسلام:صحيح لغيره، م: 1094، وهذا إسناد حسن