Part 12 · Chapter 68

And even if it appears that there is an infant who walks on his feet in less than two years, it is because once his NH, which are the legs, were corrected — even though Yesod and Malchut were not yet fully clarified — he can already walk on his feet, for the walking depends on them. And this is the opinion of the one who says that the time of the Yenika is only eighteen months.