On life, death, and languages an Arabic critical edition and English translation of epistles 29-31 = Ar- Risāla al-ḫāmisa ʿāšira ila ar-risāla as-sābiʿa ʿašra, min al-qism aṯ-ṯānī fi 'ṭ-ṭabīʿīyāt - Ormsby, Eric 1941-; Ormsby, Eric 1941- (Oxford University Press in association with The Institute of Ismaili Studies, 2021)
Keywords: Iḫwān aṣ-Ṣafāʾ; Sprache -- Motiv; Tod -- Motiv; Leben -- Motiv; Brief; Quelle