Did Indira Gandhi sell back illegally a piece of Indian land to Pakistan?

Former
Pakistani President Asif Ali Zardari, in his speech at the Pakistan parliament
on Friday, made a claim that Indira Gandhi negotiated a land deal with
Pakistan after the 1971 war and he also adds that Zulfikar Ali Bhutto, the
then President of Pakistan, had taken back the land successfully from
India after having a dialogue with Indira Gandhi, even when 90,000 Pakistan
prisoners were in India as prisoners of war.

This can
be an embarrassment to Congress party and the Nehru-Gandhi family considering
the sensitive nature of the issue. Many military historians have said that the
strategic gains that India had got because of 1971 war is less as Indira Gandhi
didn’t utilize the massive military victory for the strategic interests.

The
question is if this statement can be taken on face, what will be the answer of
the Congress party?