Why are Indian players wearing black armbands in IND vs ENG Test?

In the ongoing Test in Rajkot against England, the members of the Indian team were spotted wearing black armbands as the play started on Day 3. The BCCI released a statement announcing that the Indian players will be wearing black armbands to honour India's captain and oldest Test cricketer Dattajirao Gaekwad, who passed away on February 13.