Al-Insaf fima Yajib I'tiqaduh walā Yajūz al-Jahl bih (Arabic: الإنصاف فيما يجب اعتقاده ولا يجوز الجهل به, lit.

'Equity in What Must Be Believed In, and May Not Be Ignorant About'),[1] is an Islamic theological book, written by the Maliki-Ash'ari scholar Abu Bakr al-Baqillani (d. 403/1013), as a methodical refutation against the Mu'tazilis and the Anthropomorphists (al-Mushabbiha).

His theological position takes the combination between rationalistic method and application of the revelation.

Al-Baqillani also elucidated his stance concerning mutashabihat verses (uncertain or doubtful passages whose meaning is open to two or more interpretations) which were literally understood by the Anthropomorphists.

He also said: Allah is clear from being in directions, or resembling the creations, and also He is not attributed with transformation or movement, nor with standing or sitting, as per His words: “There is nothing whatever like Him” [Qur'an 42:11] and “And there is none comparable to Him” [Qur'an 112:4], because such attributes are of the creations, and Allah (the Creator) is clear from that.Al-Baqillani demonstrates that:[7] And other foundational Ash'ari beliefs.