Quotes from Treatise on the Great Perfection of Wisdom, Vol. 5
(Mahāprajnāpāramitāśāstra)
"The three concentrations (S.samādhi) are those of emptiness (S.śūnyatā), wishlessness (S.apraṇihita) and signlessness (S. ānimitta)."
《大智度論》卷5
「諸三昧」者，三三昧：空、無作、無相。