ramah krsnas ca gokule
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O King Pariksit, within a very short time both Rama and Krsna began to walk very easily in Gokula on Their legs, by Their own strength, without the need to crawl.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Instead of crawling with Their knees, the babies could now stand up by holding on to something and walk little by little, without difficulty, by the strength of Their legs.