The Maharaja's troops could not withstand the tribal militia attack in September and October 1947; they were heavily outnumbered and outgunned by the tribal militias, and were also facing internal rebellions from Muslim troops. The Maharaja made an urgent plea to Delhi for military assistance. Upon the Governor General Lord Mountbatten's insistence, India required the Maharaja to accede before it could send troops. Accordingly, the Maharaja signed an instrument of accession on 26 October 1947, which was accepted by the Governor General the next day. While the Government of India accepted the accession, it added the proviso that it would be submitted to a "reference to the people" after the state is cleared of the invaders, since "only the people, not the Maharaja, could decide where Kashmiris wanted to live."; it was a provisional accession. The largest political party, National Conference, headed by Sheikh Abdullah, endorsed the accession. In the words of the National Conference leader Syed Mir Qasim, India had the "legal" as well as "moral" justification to send in the army through the Maharaja's accession and the people's support of it.