Hadithcore
Musnad Ahmad 1446
sahih

Bukair bin ‘Abdullah bin al Ashaji narrated that he heard ’ Abdur-Rahman bin Husain narrate that he heard Sa"d bin Abi Waqqas say:

I heard the Messenger of Allah (ﷺ) say: "There will be turmoil (fitnah) in which the one who is sitting will be better than the one who is standing, the one who is standing will be better than the one who is walking, the one who is walking will be better than the one who is running." He said: And I think he said: “And the one who is lying down will be better than the one who is sitting."

References1 variant
Arabic/English book
Book 8, Hadith 1446