Muhaddislar tomonidan yaratilgan va ishonarli manbalar deya e’tirof etilgan “Al-kutub as-sitta” (“Olti kitob”) quyidagilardan iborat:
1. Abu Abdulloh Muhammad ibn Ismoil al-Buxoriy tomonidan yozilgan “Al-jome’ as-sahih” asari.
2. Imom Muslim an-Nishopuriy (Imom Muslim ibn al-Hajjoj) tomonidan yozilgan “As-sahih” asari. 3. Imom ibn Mojja tomonidan yozilgan “Sunnan”. 4. Imom Abu Dovud Sulaymon–Sijistoniy tomonidan yozilgan “Sunnan” asari. 5. Imom Muhammad ibn Iso at-Termiziy tomonidan yozilgan “Aj-jami al-kabir” asari.
