Income tax legislation never provides a conceptual definition of the term income

Income tax legislation never provides a conceptual definition of the term income. Rather the word income is left to be understood in its everyday sense. The courts talk about income according to everyday concepts and usage.
Taking everyday concepts and usage as the reference point the courts have held that income does not include gains or receipts of a capital character. And as a corollary, there can be no deduction for capital expenditure or losses.
Required:
From our case readings identify and briefly outline the facts and decision of one case concerning gains or receipts or expenditure or losses that turns on the capital-income distinction.
(Note in identifying the case you can use the case name or simply say: 'The case about ...')