Four of the Worst of the Major Sins
ʿAbdullāh b. Masʿūd – Allāh be pleased with him – said:
The worst of the worst (major) sins are: to associate partners with Allāh, to lose hope of the aid of Allāh, to despair of the mercy of Allāh, and to feel safe from the plans of Allāh.
Al-Ṭabarī, Al-Tafsīr (Qurān 4: 31). Graded ṣaḥīḥ by Ibn Kathīr in his tafsīr of the same verse.
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Related sayings.
ʿAbdullāh b. Masʿūd – Allāh be pleased with him – said: A believer might harbour any [bad] quality, except treachery and lying. Ibn Abī Shaybah, Kitāb Al-Īmān article 80, where Al-Albānī grades its chain of narration ṣaḥīḥ; and others. Saʿd b. Abī Waqqās – Allāh be pleased with him – said: A believer might be […]
Ibn Masud on what truthfulness and lying lead to.