It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) concerning the saying of Allah Almighty: "And beneath it (the wall) was a treasure belonging to the two of them." [Surah al-Kahf: 82] He said: "It was not gold or silver; rather, it was scrolls of knowledge." The chain of this hadith is sahih (authentic), and the two Shaykhs did not record it. And the narration to the contrary has been authentically reported from Abu al-Darda':

It is narrated from Sayyiduna Abu al-Darda' (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said concerning the saying of Allah Almighty: "And beneath it (the wall) was a treasure belonging to the two of them." [Surah al-Kahf: 82] "It was gold and silver."

It is narrated from Ibn Abi Mulaykah; he said: Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) was asked about the children (of the polytheists): will they be in Paradise? He said: "It is enough for you to know that this very matter is what Sayyiduna Musa and al-Khadir (peace be upon them both) disagreed about." The chain of narration of this hadith is sahih (authentic), but the two Shaykhs (Bukhari and Muslim) did not record it.