Karma-kāṇḍa vicāra means I do something and I profit and I enjoy it. I do some sacrifices, I become elevated to the heavenly planet, and I enjoy life. This is karma-kāṇḍa. And jñāna-kāṇḍa means that this world is false: brahma satyaṁ jagan mithyā; therefore let me merge into the Brahman effulgence. Nirbheda brahmānusandhana. This is jñāna-kāṇḍa. Nirbheda brahmānusandhana. But bhakti means jñāna-karmādy-anāvṛtam (CC Madhya 19.167). One must be free from this karma-kāṇḍīya vicāra and jñāna-kāṇḍa vicāra. Must be pure devotee. What is that? Ānukūlyena kṛṣṇānu-śīlanam. Simply to carry out.
So it was the duty of Yudhiṣṭhira to immediately, what Kṛṣṇa said, immediately to execute it. But because he was on the karma-kāṇḍīya . . . of course, they were all devotees, but just to show us . . . the karma-kāṇḍīya vicāra, they hesitated. Just like the brahmins who were . . . yajñic brāhmin who was performing sacrifices, and Kṛṣṇa, Kṛṣṇa's friends became hungry. So they asked Kṛṣṇa, "Kṛṣṇa we are hungry. Give me . . . please arrange for some food." Kṛṣṇa said: "Yes, you go immediately there. The brahmins are performing yajñas, and ask them for some food."
They went, but the brahmins refused, "Oh, the yajña is not yet performed. How we can give you? No, no. Don't talk." So they came back. Then Kṛṣṇa said: "Go to their wives, the yajñic brāhmin patnī. Go to their wives." And as soon as they went to the wives, they heard Kṛṣṇa's name, they were very much beloved to Kṛṣṇa. Immediately, whatever was there for the yajña, immediately they brought to Kṛṣṇa. This is bhakti.