tam aviklavam avridam
bibhrat svam paurusim tanum
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Seeing Lord Siva unagitated and unashamed, Lord Visnu [Madhusudana] was very pleased. Thus He resumed His original form and spoke as follows.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Although Lord Siva was aghast at the potency of Lord Visnu, he did not feel ashamed. Rather, he was proud to be defeated by Lord Visnu. Nothing is hidden from the Supreme Personality of Godhead, for He is in everyone’s heart. Indeed, the Lord says in Bhagavad-gita (15.15), sarvasya caham hrdi sannivisto mattah smrtir jñanam apohanam ca: “I am seated in everyone’s heart, and from Me come remembrance, knowledge and forgetfulness.” Whatever happened had taken place under the direction of the Supreme Personality of Godhead, and therefore there was no cause to be sorry or ashamed. Although Lord Siva is never defeated by anyone, when defeated by Lord Visnu he felt proud that he had such an exalted and powerful master.