Abu Ishaq said that he heard al-Bara' b. 'Azib (Allah be pleased with him) say:The last complete sura revealed (in the Holy Qur'an) is Sura Tauba (i e. al-Bara'at, ix.), and the last verse revealed is that pertaining to Kalala
Tushen bai rubuta wata daraja ga wannan ruwaya ba.
A ƙarƙashin kowace ruwaya akwai fassarar tarin bayanan kansa, an nuna ta yadda take. Ba ta ambaci sunan mai fassara ba, ba a tabbatar da haƙƙoƙinta ba, kuma babu wanda ya kwatanta ta da Larabcin; wasu ruwayoyin ba su da ita. Larabcin shi ne rubutun. Tarin bayanan ba shi da fassarar wannan littafi a wannan harshe, don haka ana nuna Turancin.
Rubutun Larabci, lambobi, sunayen littattafai da darajoji ana nuna su daidai yadda suke a cikin wani buɗaɗɗen tarin bayanai (hadith-api). Sabīl bai tabbatar da daidaitonsa ko haƙƙoƙinsa ba tukuna, kuma ba a fara bitar malamai a kansa ba. Kafin lokacin, ku kwatanta ruwaya da bugaggen littafi kafin ku dogara da ita.