The Divyavadana is a Sanskrit anthology of Buddhist avadana tales. They have originated in Mulasarvastivadin vinaya texts. It is dated to 2nd century CE.
Tamil is the oldest with literature dating back to early centuries of Christian era. This developed during the three Sangams(assemblies of poets and writers) held during different times
In Southern India, the ancient Indian writings were written in four Dravidian languages which developed their own script and literature, these are, Tamil, Telugu, Kannada,Malayalam