Shanti Parva 138.112

Indeed, O foremost of Bharata's race, the Chandala returned to his house freed from that great danger, and having regained his precious life, the cat from the branches of that tree addressed the mouse Palita then living with in the hole, and said,-Without having talked to me, you have suddenly run away. I hope you do not suspect me of any evil motive. I am certainly grateful and you have done me a great service.