Thus each to other pledged and bound In solemn league new transport found, And bent upon his dear ally The gaze he ne’er could satisfy. “Friend of my soul art thou: we share Each other’s joy, each other’s care;” Thus in the bliss that thrilled his breast Sugríva Raghu’s son addressed.

In plain words: Bound by their promise, the two friends gaze at each other happily. Sugriva tells Rama that he is his dearest friend and they will share each other's joys and troubles.