Step 1: Section 56(2)(x) of the Income-tax Act, 1961 is a residuary anti-avoidance provision. It applies when a person receives money without giving anything in return, and the person paying is not covered by the list of relatives the Act recognises for exemption purposes.
Step 2: The provision sets a threshold of \( \text{₹}50{,}000 \). If the total sum received without consideration from such a non-relative in a year crosses this figure, the law treats the whole amount, not just the excess, as chargeable income, unless it falls under a specific carve-out such as receipt on marriage, under a will, or by inheritance.
Step 3: None of those carve-outs apply here, since the payer is a non-relative and no exempting occasion is mentioned, so the amount is brought to tax. Because a gratuitous receipt of this kind does not fit under salary, house property, business income or capital gains, it is charged under the residuary head.
\[ \boxed{\text{It is taxable under the head Income from Other Sources.}} \]