ما هي السور السبع الطوال في القرآن الكريم ؟
Among the seven Surahs, the first three, namely Al-Hadid, Al-Hashr and As-Saff commence with the past perfect tense 'sabbaha' ""purity has been proclaimed"" whilst the last two, namely Al-Jumu'ah and At-Taghabun commence with the imperfect tense yusabbihu [purity is proclaimed]. This implies that the purity of Allah should be declared at all times, the past, the present and the future.
Al-Hadid, Al-Hashr and As-Saff