تُقدّر بقاء أهل الكهف بالسنين الشمسية. توهم اشتمال القرآن الكريم على كلمات زائدة لا فائدة منها

And the Earth, after that, Hath He extended	We are able to expand, as We expand its construction
This creation order is consistent with Ages predicted for Universe, sun, and Earth	English - Sahih International : And they remained in their cave for three hundred years and exceeded by nine• " And We indeed Have vast power; to expand it "

ولبثوا في كهفهم ثلاث مائة سنين وازدادوا تسعا

Commentators suggest each period is either a thousand years or an Earthly-day long.

عدد أصحاب الكهف, قال الله تعالى في عدد أصحاب أهل الكهف: (سَيَقولونَ ثَلاثَةٌ: Are ye the more difficult to create or the Samaa Firmaments above? Right after the Big bang, Allah has created Firmaments and Aradean in six periods
نظرات في آيات قصة أصحاب الكهف: So He completed them as seven firmaments in two Days periods … " Surah 41, Verses 11-12
جمعية الفلك بالقطيف :: السنون الشمسية والسنون القمرية / زكريا المدن: This creation order is consistent with Ages predicted for Universe, sun, and Earth

We are able to expand, as We expand its construction	This interprets as: ALLAH constructs Sama via expansion
We are of the opinion that the number of the years "300 and 309" have not been stated by AIIah Himself but Allah has cited these as sayings of the people	' They said: 'We do come, in willing obedience'

So He completed them as seven firmaments in two Days periods … " Surah 41, Verses 11-12.

كم سنة مكث اهل الكهف في كهفهـــم ..؟!: By the end of the sixth period, the seven distinct and thermally decoupled Firmaments are given order and perfection
توهم اشتمال القرآن الكريم على كلمات زائدة لا فائدة منها: There were nothing except Allah, and his Throne was over the Waters
خلق الكون بين الآيات القرآنيّة والحقائق العلميّة: Italiano - Piccardo : Rimasero trecento anni nella loro caverna e ne aggiungono altri nove• By the end of the sixth period, the seven distinct and thermally decoupled Firmaments are given order and perfection