You can take the gift, it will just be taxable
If you are not a major then this income will be clubbed in the income of that parent which has higher income. Otherwise the tax implications are on you
Explanation to S.64(1A)
For the purposes of this sub-section, the income of the minor child shall be included,—
(a) where the marriage of his parents subsists, in the income of that parent whose total income (excluding the income includible under this sub-section) is greater ; or
(b) where the marriage of his parents does not subsist, in the income of that parent who maintains the minor child in the previous year,
and where any such income is once included in the total income of either parent, any such income arising in any succeeding year shall not be included in the total income of the other parent, unless the Assessing Officer is satisfied, after giving that parent an opportunity of being heard, that it is necessary so to do.
I'd say its highly recommendatory to have a gift deed. It is a prima facie evidence that gift was given
A Mere bank transfer is just an evidence as to flow of funds
Why specifically asking if the value is above 50Lakhs? (For stamp duty purpose??)
Read the following aswell
S.56(2)(vii)(b)
In particular, and without prejudice to the generality of the provisions of sub-section (1), the following incomes, shall be chargeable to income-tax under the head “Income from other sources”, namely....................
where an individual or a Hindu undivided family receives, in any previous year, from any person or persons on or after the 1st day of October, 2009,—
(b) any immovable property,—
(i) without consideration, the stamp duty value of which exceeds fifty thousand rupees, the stamp duty value of such property;