Ijtihad is a duty of sufficiency and every Muslim reserves the right to perform Ijtihad provided he meets all its prerequisites.

The Islamic Shari’ah has made Ijtihad to deduce the Shari’ah rules from the address of the Legislator – i.e. from the Shari’ah texts which are revealed by Allah (swt) to the Messenger of Allah (pbuh) - an obligation upon the Muslims. The fact that Ijtihad is an obligation has been confirmed through several narrations. The Messenger of Allah (pbuh) said:

. إِذَا حَكَمَ الْحَاكِمُ فَاجْتَ هَدَ ثُمَّ أَصَابَ فَ لَهُ أَجْرَانِ، وَإِذَا حَكَمَ فَاجْتَ هَدَ ثُمَّ « » أَخْطَأَ ف لَهُ أَجْرٌ .

“When a judge utilizes his skill of judgement and comes to a right decision, he will have a double reward, but when he uses his judgement and commits a mistake, he will have a single reward.” (agreed upon through Amru Bin Al-Aas). He also said:

. » وَرَجُلٌ قَضَى لِلنَّاسِ عَلَى جَهْلٍ فَ هُوَ فِي النَّارِ «.

“and a man judged people without knowledge, he is in Hell fire” (transmitted by the compilers of the Sunan and Al- Hakim and Al-Tabarani with a Sahih chain). This confirms that the judge must be acquainted with what he judges on. It is also reported that he said to Ibn Mas’ud:

. اقْضِ بِالْكِتَابِ وَالسُّ نَّةِ إِذَا وَجَدْتَ هُمَا، فَإِذَا لَمْ تَجِدِ الحُكْمَ فِيهِمَا فَاجْتَهِدْ « » رَأْيَكَ .

Judge by the Book and the Sunnah wherever you find (the ruling) in them, and if you don’t find the ruling in them, then do Ijtihad (use your judgement)” as mentioned by Al- Amidi in Al-Ahkam and Al-Razi in Al-Mahsul. He said to Mu’ath and Abu Moussa Al-Ash’ari when he was about to dispatch them to Yemen:

. بِمَ تَ قْضِيَانِ ؟ فَ قَالاَ: إِنْ لَمْ نَجْدِ الْحُكْمَ فِي الْكِتَابِ وَالسُّ نَّةِ قِسْ نَا الأَمْرَ « » بِالأَمْرِ، فَمَا كَانَ أَقْ رَبَ إِلَى الحَقِّ عَمِلْنَا بِه .