For individual assessee quoting of PAN is must for purchase & sales of any immovable property, for value above Rs. 10 lakhs.
Secondly, Annual Information Return (AIR) of 'high value financial transactions' is required to be furnished under section 285BA of the Income-tax Act, 1961 by 'specified persons' in respect of 'specified transactions' registered or recorded by them during the financial year. Under the section, Registrar or Sub Registrar appointed under section 6 of the Registration Act, 1908 is required to report Purchase or Sale by any person of immoveable property valued at 30 lakh rupees or more.
Both the complience are for PURCHASE & Sales of immovable property, but nowhere it is specifically mantioned for GIFT DEED.
So, it is at the discretion of Sub-registrar to accept Aadhar as proof for second Donee, but first Donee and Donar should have Pan.