Markandeyapurana 75.42

Mārkaṇḍeya spoke:
Thereat the king pondered on the reason for his using the term son-in-law and understood it not; therefore keeping silence the king accepted the argha. When the king had taken a seat and accepted the argha, the brāhman, the great muni, addressed him a welcome — “I trust thou farest well in thy home, in thy treasury, and army, in thy friends, in thy servants and ministers, and in thy own self whereon rests every thing, O king of mighty arm! And thy wife fares well; since she is indeed at hand, I ask not therefore about her, hut I hope thy other wives fare well!”

The king spoke:
Through thy favour 1 have no ill-fortune any where, O strict observer of vows; and my curiosity is aroused, what wife have I here, O muni?