अङ्गानां समतां विद्यात्समे ब्रह्मणि लीनताम् ।नो चेन्नैव समानत्वमृजुत्वं शुष्कवृक्षवत् ॥ ११५ ॥
In plain words
When they say hold the limbs even, understand it as this: dissolving into Brahman, which is evenness itself. Anything short of that is not evenness at all. A withered tree stands perfectly straight too.
Close to the Sanskrit
One should know the evenness of the limbs to be absorption in the even Brahman; if not, there is no evenness at all — the straightness is like that of a dry tree.