• The importance of tawhid (monotheism) is revealed in a number of themes throughout the propaganda, in different strands of the ideology: one God, one state, and one ummah (the global Islamic community). These themes appear in over 74 per cent of the propaganda.
• An emphasis on the nobility of jihad runs throughout the propaganda, often presenting it in chivalric terms, with pictures of fighters on horseback, or references to Saladin. Altogether, such references appear in 71 per cent of the propaganda.
• The importance of honour, and the solidarity of the ummah is also central, appearing in 68 per cent of the propaganda. The virtue of martyrdom – common to many religions, but here applied deliberately to death in battle – forms a significant part of the value of honour, appearing explicitly in 32 per cent of the propaganda, and implicitly in 68 per cent.
• Altogether, justifications from the Quran, Hadith or from scholarship appear in 87 per cent of the propaganda. One ISIS statement contained 24 references to the Quran, making up 26 percent of the entire statement. Of these 24 references, 13 different surahs (chapters) were referenced.
• While Quranic justifications are usually presented without context, reinforcing the accusation that the groups 'cherry pick' passages that support their case, the ideology makes extensive use of scripture: half of the propaganda references the Quran, with 63 out of the 114 surahs referenced.
• Hadith justifications are used much less than Quranic justifications, appearing in only 22 per cent of the sample. The accusation that Salafi- jihadi groups pick Hadith that suit their vision may be bolstered by the ways in which they use them: authoritative Hadith are cited with the full details of their origins; the referencing of those of more doubtful provenance is much more vague.
• When the groups are criticised for their actions by rival Salafi-jihadi groups or others, the Quran and the Hadith are the first reference points that are used for the rebuttal. Hadith in particular are used in bulk when groups are attacked by other followers of the ideology.
• Nevertheless, the vaunted Salafi rejection of much Islamic scholarship as 'innovation' (ISIS refers to established scholars as "donkeys of knowledge") is belied by references throughout the propaganda to 45 different scholars from all the major schools of jurisprudence apart from the Hanafi school