According to search-discovered classical Islamic scholarship, the concept of Al-Khida' (Deceit) is vehemently condemned in the Quran as a cardinal sin and a defining characteristic of hypocrisy (nifaq). Ibn Kathir, in his tafsir of Surah Al-Baqarah (2:9), explains that the hypocrites' attempts to deceive Allah and the believers are ultimately an act of self-deception, as they are unaware that their schemes only deepen their spiritual malady. Al-Qurtubi elaborates on the legal and social ramifications, stressing that a society built on deceit is contrary to Islamic principles of justice and trust. The thematic synthesis across verses like 2:9 and 4:142 reveals a divine principle: Allah's omniscience makes any attempt to deceive Him futile, and He turns the deceivers' plots back upon them. While Islam is founded on absolute truthfulness, scholars note extremely narrow exceptions derived from Hadith, such as saving an innocent life, which are strictly contextual and do not permit general dishonesty. This establishes deceit as an act of disbelief and a profound spiritual delusion.