evam abhyarthito visnur
sri-sukah uvaca—Sri Sukadeva Gosvami said; evam—in this way; abhyarthitah—being requested; visnuh bhagavan—Lord Visnu, the Supreme Personality of Godhead; sula-panina—by Lord Siva, who carries a trident in his hand; prahasya—laughing; bhava-gambhiram—with serious gravity; girisam—unto Lord Siva; pratyabhasata—replied.
Sukadeva Gosvami said: When Lord Visnu was thus requested by Lord Siva, who carries a trident in his hand, He smiled with gravity and replied to Lord Siva as follows.
The Supreme Personality of Godhead, Visnu, is known as Yogesvara. Yatra yogesvarah krsnah. Mystic yogis want to acquire some power by practicing the yoga system, but Krsna, the Supreme Personality of Godhead, is known as the Supreme Lord of all mystic power. Lord Siva wanted to see the Mohini-murti, which was captivating the entire world, and Lord Visnu was gravely thinking of how to captivate Lord Siva also. Therefore the word bhava-gambhiram is used here. The illusory, material energy is represented by Durgadevi, who is the wife of Girisa, or Lord Siva. Durgadevi could not captivate Lord Sivaís mind, but now that Lord Siva wanted to see Lord Visnuís feminine form, Lord Visnu, by His mystic power, would assume a form that would captivate even Lord Siva. Therefore Lord Visnu was grave and at the same time was smiling.
Link to this page: https://prabhupadabooks.com/sb/8/12/14