▁the ▁legal ▁vic inity ▁of ▁q an ats . ▁For ▁example , ▁Moh amm ad ▁bin ▁Has an ▁quotes ▁A bo o - H an ife h ▁that ▁in ▁case ▁someone ▁construct s ▁a ▁q an at ▁in ▁abandoned ▁land , ▁someone ▁else ▁can ▁dig ▁another ▁q an at ▁in ▁the ▁same ▁land ▁on ▁the ▁condition ▁that ▁the ▁second ▁q an at ▁is ▁ 5 0 0 ▁z era ’ ▁( 3 7 5 ▁meters ) ▁away ▁from ▁the ▁first ▁one . ▁M s . ▁Lamb ton ▁quotes ▁Mo een ▁al - din ▁Es far zi ▁who ▁wrote ▁the ▁book ▁Row zat ▁al - J ann at ▁( the ▁garden ▁of ▁parad ise ) ▁that ▁Abd ol lah ▁bin ▁T ah ir ▁( from ▁the ▁T ah er ian ▁dynast y ) ▁and ▁Is ma e el ▁Ah med ▁Sam ani ▁( from ▁the ▁Sam ani ▁dynast y ) ▁had ▁several ▁q an ats ▁constructed ▁in ▁N ey sh ab oor . ▁Later , ▁in ▁the ▁ 1 1 th ▁century , ▁a ▁writer ▁named ▁Nas ir ▁Kh os row ▁acknowled ged ▁all ▁those ▁q an ats ▁with ▁the ▁following ▁words : ▁“ N ey sh ab oor ▁is ▁located ▁in ▁a ▁vast ▁plain ▁at ▁a ▁distance ▁of ▁ 4 0 ▁F ars ang ▁( ~ 2 4 0 ▁km ) ▁from ▁Ser ak hs ▁and ▁ 7 0 ▁F ars ang ▁( ~ 4 2 0 ▁km ) ▁from ▁Mary ▁( Mar v ) ▁… ▁all ▁the ▁q an ats ▁of ▁this