Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 20

Sanskrit:

यदा न जगृहे राजा भार्यापुत्रावनिन्दितौ ।श‍ृण्वतां सर्वभूतानां खे वागाहाशरीरिणी ॥ २० ॥

ITRANS:

yadā na jagṛhe rājābhāryā-putrāv aninditauśṛṇvatāṁ sarva-bhūtānāṁkhe vāg āhāśarīriṇī

Translation:

When the King refused to accept his wife and son, who were both irreproachable, an unembodied voice spoke from the sky as an omen and was heard by everyone present.

Purport:

Mahārāja Duṣmanta knew that Śakuntalā and the boy were his own wife and son, but because they came from outside and were unknown to the citizens, he at first declined to accept them. Śakuntalā, however, was so chaste that an omen from the sky declared the truth so that others could hear. When everyone heard from the omen that Śakuntalā and her child were truly the King’s wife and son, the King gladly accepted them.