Shaikh al-Albani’s son, Abdul-Lateef, mentioned that his father:
“… used to say in his sleep, ‘Bring me the book entitled ‘Al-Ilal. Bring me the book entitled such and such. Bring me the book entitled such and such. Bring me the book entitled ‘Al-Jarh wat-Ta’deel.‘ And one time he said while he was asleep and while he was moving his hand as someone writing would, ‘Bring [the book] Sunan Abu Dawood and the problem will be solved.’
One time he said to me whilst he was asleep, ‘Bring the first volume of the book Al-Targheeb and Tarheeb.’ So I brought it. He then said to me, ‘Open it,’ and I did. He said, ‘Look at one, two, three ahadith. Are these approximately equal in length?’ So I said, ‘No. There is one amongst them which is long.’ He said, ‘Go …’—this is during sleep, he is talking whilst he is asleep. I then said to him, ‘This third hadith is long.’ So he asked, ‘Who narrated it?’ I replied, ‘So and so.’ Then he said, ‘Enough. Return the book.'”
All of this was when he was asleep!”
Al-Imaam al-Albani, Duroos wa Mawaaqif wa Ibar, pp. 65-66.