(i)such assets are held ][under a trust declared by any person by will and such trust is the only trust so declared by him] [ Substituted by Act 44 of 1980, Section 40 for " under a trust declared by will" (w.e.f. 1.4.1980).][; or] [Substituted by Act 19 of 1970, Section 26, for sub-Section (4)(w.e.f. 1.4.1971). ]