Receipt of Gift from Mother in India, transferred to USA

I received $51K in Indian currency as Gift from my Mother in India, which I deposited in my bank account in India & the transferred it to my USA bank account.

 

I know I have to file FBAR, and since this is  <$100,000 TurboTax dialogue says I don't need to enter any thing in TurboTax tax file creation. Also, since this less that $100K, I am not required to file 3520.

 

So, how do I report sources of these funds to IRS. which form or other ways I have to report?