In plain words
If you want Peace, you must throw away all these Pieces you see. They bring no happiness to you, and none to others. You must move about freely, with the feeling that the Ātma is one. Only because he lacks the feeling that the Ātma is one does man get caught in ‘attachment’ and become bound. When Lust comes, Love goes far away. Attachment brings us bondage; Detachment brings great happiness. So only when he develops pure Prema, free of Attachment and of desires, can man live as a man.
Sannyāsa is giving up desires
When Ādi Śaṅkara went to the northern country spreading the doctrine of Advaita, he held a debate there with a scholar named Maṇḍana Miśra. Maṇḍana Miśra vowed that if he lost, he would take sannyāsa. When a debate is held, there must be someone as witness to say who has won, surely! Maṇḍana Miśra's wife, Ubhayabhāratī, was a great jñānī. In deciding the truth, no one could equal her. Satya itself is God. Keeping that in mind, Śaṅkara asked her to be the witness. “Can my wife be a witness for me?” asked Maṇḍana Miśra. “To decide the truth, what does it matter who it is?! Wife, child or mother, it is all one. So by all means she may,” said Śaṅkara. She stood between the two of them. She listened to the questions both of them asked and the answers they gave. In the end she gave her judgement that the victory was Śaṅkara's. True to his word, Maṇḍana Miśra took sannyāsa. Along with her husband, Ubhayabhāratī too took sannyāsa. What is sannyāsa? Sannyāsa is nothing but giving up all desires. As long as he has desires, a man is only a householder; he cannot be a sannyāsī. While one is a householder, ties form with many people. Once a son is born, a daughter-in-law comes next.