Step 1: Understanding the Question:
The question asks to identify the prominent personality who referred to the Indian Constitution as a 'sacred document'.
Step 2: Key Concept:
This question relates to the views and opinions expressed by the members of the Constituent Assembly about the Constitution they had framed. B. R. Ambedkar, as the Chairman of the Drafting Committee, played a pivotal role and often spoke about the nature and significance of the document.
Step 3: Detailed Explanation:
Dr. B. R. Ambedkar, the chief architect of the Indian Constitution, held it in very high esteem. In his concluding speech in the Constituent Assembly on November 25, 1949, he referred to the Constitution as a fundamental document which lays down the basic structure of the government and the principles that should guide it. He considered it a 'sacred document' that should not be easily subverted. He believed that the success of the Constitution would depend not on its text but on the people who implement it.
- K.M. Munshi referred to the Preamble as the 'political horoscope' of the Indian Constitution.
- Mahatma Gandhi was not a member of the Constituent Assembly.
Step 4: Final Answer
Dr. B. R. Ambedkar called the Constitution a 'sacred document'.