Here is another quote from Swami Prabhavananda The Spiritual Heritage of India (1962; from a section on the Ramayana and Rama) concerning truth:
This extreme devotion to truth is to be understood in the light of the characteristic Hindu belief that it is this quality by which God himself is chiefly known. God is, above all, truth [...] All other crimes can be forgiven, for they represent faults that can be overcome, but not so untruthfulness. This alone, for the Hindu, is the unpardonable sin.
Is this undisputed and if so, how does it bear out in contemporary India, e.g. its the state's code of law or in what one could witness in daily life?