A brief introduction to the Devala-Smriti, a very ancient Dharmasastra treatise. In the 10th century, a chapter titled Mlēccita-Śud'dhih was added to it, dealing with the reconversion of Hindus back to their original Dharma
The Hindu civilisational continuity is also seen in the organisation of its administration, which was helmed by some extraordinary ministers: from Kautilya to the Ashta-Pradhans