Everyone will be called by his Imam on the Day of Resurrection

Allah tells us that on the Day of Resurrection, he will call each people to account by its Imam. The scholars differed as to the meaning of this (i.e. Imam. Mujahid and Qatadah said that it meant each nation would be called to account by its Prophet. Some of the Salaf said this is the greatest honor for the people of Hadith, because their leader is the Prophet . Ibn Zayd said it means they would be called to account by their Book which was revealed to their Prophet with its laws. This was also the view favored by Ibn Jarir. Ibn Abi Najih narrated that Mujahid said, "With their Books." It may be that what is meant here is what Al-`Awfi narrated from Ibn `Abbas concerning this Ayah,

يَوْمَ نَدْعُواْ كُلَّ أُنَاسٍ بِإِمَـمِهِمْ

Commentary

The word: اِمَام (Imam) in the first sentence of verse يَوْمَ نَدْعُو كُلَّ أُنَاسٍ بِإِمَامِهِمْ translated as ' (Think of) the Day We will call every people with their book of deeds' appears here in the sense of 'book' as in Surah Ya Sin: وَكُلَّ شَيْءٍ أَحْصَيْنَاهُ فِي إِمَامٍ مُّبِينٍ (and We have enumerated everything in a clear book - 36:12). Here, إِمَامٍ مُّبِينٍ means a clear book. Then, 'kitab' is called 'imam' for the reason that, in the event of some error or difference, one turns to the book very much like turning to a religious leader who is followed. (Qurtubi)