In the book "Awareness" of Anthony De Mello I've read the following quotation "from the sacred book of the Hindus":
...Lord Krishna says to Arjuna: "Plunge into the heat of battle and keep your heart at the lotus feet of the Lord".
But I can not find such place in the Bhagavadgita. Some of my acquaintance researchers in private conversation told me that this is probably wrong citation based on BhG 3.30.
My question: is it correct citation or not?
P.S. I haven't found this citation in this question: Which famous quotes are wrongly attributed to Bhagavad Gita?
I am curious: if it is wrong, what's the basis of it?