Which of the following was not included when the writing of the Constitution of India was completed on $\mathrm{26.11.1949}$?

Fundamental Duties were not part of the original Constitution adopted on November 26, 1949. They were later inserted into Part IV-A (Article 51A) by the $42^{\text{nd}}$ Constitutional Amendment Act in 1976, following the recommendations of the Swaran Singh Committee.