Once Narada came to VIshnu and asked why do people don't call Yudhistra as Daata , while they call Karna as Daata
Vishnu says lets go and check ourself. Both went as poor brahmin and asked Yudhistra , dry sandal wood for prayer. It was monsoon time and there was heavy rain.
Yudhistra sent his people all around and even after 3 days , they could not find dry sandal wood. Yudhistra apologized to brahmins for his inability to give them dry Sandalwood.