The five-time-Lok Sabha member, however, claimed his meeting with Modi was about development of Bihar and said no political motives should be attributed to it.
The RJD strongman said he was "very satisfied" with his meeting with Modi who offered him all support.
Yadav had yesterday attacked Kumar and threatened to resign from Lok Sabha membership amid criticism of him by several RJD leaders, including RJD chief Lalu Prasad's son Tejashwi Yadav, for his alleged hobnobbing with BJP, something he denies.
Yadav, who defeated JD(U) President Sharad Yadav in Lok Sabha elections, had opposed the move to remove Jitan Ram Manjhi as Bihar Chief Minister.
He had yesterday lashed out at Kumar, accusing him of working to finish RJD.
He enjoys considerable support in parts of north Bihar and his wife Ranjeet Ranjan had won the Lok Sabha election on the Congress ticket.
