Once on a time a celestial messenger, coming to the court of Indra of his own accord, but remaining invisible, addressed the king of the deities in these words:
कस्यचित् त्वथ कालस्य देवदूतो यदृच्छया। स्थितो ह्यन्तर्हितो भूत्वा पर्यभाषत वासवम्॥