Lord Krishna and Draupathi

In order to protect the good people, Lord Krishna killed the evil King Shishupal. Krishna was hurt during the war and left with bleeding finger. Seeing this, Draupathi had torn a strip of cloth from her sari and tied around his wrist to stop the bleeding. Lord Krishna, realizing her affections and concern about him, declared himself bounded by her sisterly love. He promised her to repay this debt whenever she need in future. Many years later, when the pandavas lost Draupathi in the game of dice and Kauravas were removing her saari, Krishna helped her divinely elongating the saari so that they could not remove it