S. 28(i) : Business income -Professional fees – Cash method of accounting – Outstanding fee of professional work done by assessee, who kept his accounts on cash basis, after close of his profession was not taxable either under head of professional income or under residuary head of income- Income which is chargeable under a particular head cannot be taxed under the residuary head [ S. 2 (45) 4, 5 , 14 ,56 ,145 and of the Indian Income- tax Act , 1922, S.2(15), 3, 4, 5, 10, 12 ]