Knot in the heart. "She is my wife." "He is my husband." Of course, now that knot is very slack. Formerly it was very strong because the woman was not allowed to mix with any other man, and the man was also not allowed with any other woman. This intermingling has slackened even that knot, hṛdaya-granthim. Therefore, even trifle cases, quarrel between husband and wife, there is divorce. Because that unity is not very strong now. That is good. Some way or other, it is slackened. So this "own-menship" comes from bodily concept of life.
So Arjuna is preparing the ground, how to receive the instruction of Bhagavad-gītā. Because spiritual instruction will begin to separate the soul from the body. Unless one understands that there is a soul different from this body, there is no spiritual education. This is the basic principle. If you do not understand what is soul, what is spirit soul, then where is spiritual education? So Arjuna was affected. He says frankly, dṛṣṭvā tu svajanaṁ kṛṣṇa yuyutsuṁ samupasthitam: (BG 1.28) "What is this?