Income tax - house loan

First, always file your IT returns online before due date - 31st July - major advantage.

He can claim the TDS after filing his returns, provided everything is in order and the assessing officer does not make a mistake. Check 26AS and refund status on the website

Receiving money from his mother is a tax-free amount in his hand. However, it would be wise to get a gift deed registered in case the assessing officer pulls up section 68 of IT act.

Have a hard copy of 26AS with your IT returns. And not only ITR V, but also the form which you are filing should also be printed out. And after filing, you can check refund status after a month.