首楞嚴義疏注經 8.201

8.201

初句攝前。十方無礙者，既能即法離相，則不為心、境諸法所繫，故云無縛。以無縛故自在無礙，故云解脫。此解脫相本性亦離，故皆無也。

The first phrase gathers the preceding. "Unobstructed throughout the ten directions": once one can be identical to dharmas yet free from characteristics, one is not bound by dharmas of mind or objective realm; hence it says "unbound." Being unbound, one is sovereign and unhindered; hence it says "liberation." The characteristic of this liberation is originally free in its nature as well, hence both [bondage and liberation] are absent.