מדרש אויף תהילים 78:28

R. Yossi Haglili says: (Ibid.) "And it was spread around the camp about a day's journey on one side and a day's journey on the other side" for a distance of three parasangs on every side, "and about two cubits deep on the ground", and (Psalms 78:28) "and He made them (the quail) fall in the midst of their camp around their dwellings."

R. Yoshiyah says (Numbers 11:31) "And He spread them over the camp": three parasangs on each side. And what is the intent of (Ibid.) "about a day's journey on this side and a day's journey on that side"? In height. Three by three, making nine (parasangs on each side). Nine and nine, eighteen (all together.) (And thus on all the sides roundabout the camp, as it is written ) (Ibid.) "and about two cubits deep on the ground" (roundabout the camp.) And it is written "And He made them fall in the midst of the camp around their dwellings."

and another (Psalms 78:28) "around their dwellings." (How are these verses to be reconciled?) It circled each dwelling.