US passport validity while traveling to India with OCI card/U visa

[anurajesh]

Here is what I found in case anyone else is looking for an answer on this old thread:
http://www.mea.gov.in/oci-related-matters.htm
You will be allowed entry into India if you have a valid OCI Card and a valid foreign passport, with a minimum remaining validity of six months. You do not need to carry the old passport on which your "U” (OCI) Visa was stamped, if that happens to be different from your current passport.