Narrated `Abdullah bin Abi Qatada: My father said, "Allah's Apostle said, 'If the Iqama is pronounced, then do not stand for the prayer till you see me (in front of you) and do it calmly.' "
Hadith Referenceصحيح البخاري / كتاب الأذان / 638
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة