"Imamate And Caliphate - An Islamic Perspective" by: Muhammad Husayni Qazwini
Chapter 1: Necessity Of Research About Madhhab (Islamic Denomination And School Of Thought)
According to the verses of the Holy Qur’an and narrations, it is incumbent upon everyone to make efforts, investigate and research about the religion and madhhab they are to follow.
A. The Holy Qur’an
Regarding those who listen to different schools’ claims and arguments and through their efforts, choose the best, Allah (SWT) says:
فَبَشِّرْ عِبادِ الَّذينَ يَسْتَمِعُونَ الْقَوْلَ فَيَتَّبِعُونَ أَحْسَنَهُ أُولئِكَ الَّذينَ هَداهُمُ اللَّهُ وَ أُولئِكَ هُمْ أُولُوا الْأَلْبابِ