What did the rulers of the Chola Empire speak?

The Chola Empire was a Tamil-speaking dynasty that existed in southern India during the medieval period. The rulers of the Chola Empire spoke Tamil, which was the language of the common people in their kingdom. However, they also patronized Sanskrit and commissioned works in that language, which suggests that they were familiar with it. Additionally, some Chola inscriptions have been found in Prakrit, which was a language used in ancient India, particularly during the Maurya period.