The charging chapter: who is taxed, on what, and by reference to which connection with India.
Seven sections carry the whole weight of liability. Section 4 charges income-tax; section 5 fixes the scope of total income; section 6 decides residence; sections 7 to 9 pull in income that was never received in India at all — income deemed to be received, income deemed to accrue or arise here, and receipts by a specified person from a specified entity. Section 9 in particular is the gateway to almost every cross-border dispute, because it is what a treaty is then read against.