तत्रस्थाः those who were there, देवताश्च gods, सहस्राक्षः the thousandeyed, वासवश्च Indra, काञ्चनस्य of the golden Mainaka, तस्य his, सुनाभस्य of Sunabha, कर्मणा by the task, हृष्टाः delighted, अभवन् became.

The gods who happened to be present at that time (on the mountain) and the thousandeyed Indra were delighted by the gesture of golden Sunabha (Mainaka) mountain.