SB 5.20.24
evam purastat ksirodat parita upavesitah sakadvipo dvatrimsal-laksa-yojanayamah samanena ca dadhi-
mandodena parito yasmin sako nama mahiruhah sva-ksetra-vyapadesako yasya ha maha-surabhi-gandhas
tam dvipam anuvasayati.
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Outside the Ocean of Milk is another island, Sakadvipa, which has a width of 3,200,000 yojanas [25,600,000 miles]. As Krauñcadvipa is surrounded by its own ocean of milk, Sakadvipa is surrounded by an ocean of churned yogurt as broad as the island itself. In Sakadvipa there is a big saka tree, from which the island takes its name. This tree is very fragrant. Indeed, it lends its scent to the entire island.