Samura b. Jundub reported God’s Messenger as saying, “Do not let Bilal’s adhan or the false dawn prevent you from taking your morning meal [in Ramadan], but only the dawn which is widely spread in the horizon.” Muslim transmitted it, but the wording is Tirmidhi’s.
Hadith Referenceمشكوة المصابيح / كتاب الصلاة / 681
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «رواه مسلم (43/ 1094) والترمذي (706)»