Nauroji knew that Jinnah would prove a brave fight for the freedom of his country. He took him as his Private Secretary. Gopal Krishan Gokhale described Jinnah as the best Ambassador of Hindu-Muslim unity because he succeeded in narrowing down the widening gulf of Hindu-Muslim relations and brought them together at Lucknow in 1916. He always fought for the Hindu-Muslim unity which never came true. Just for this unity, he was responsible for the division of the Muslim League into Jinnah League and Shafi League on the question of Joint electorates and Simon Commission.
Member of the Muslim League (1913).
He joined the all India Muslim League in 1913 and did not leave the Congress. He was a true nationalist who wanted to cement the Muslim and the Hindus into one nation. His nationalism was marred by the haughty attitude of the Congress. Tired and exhausted he became a sectionalist and left the Congress in 1920 on difference with Mahatma M.K. Ghandi.
Ambassador of Hindu - Muslim Unity.
After the death of Gopal Krishan Gokhale, the Hindus and Muslims came close to each other. He wanted political cooperation between the Congress and the League.
Congress was to convene its annual meeting in Bombay in 1915. Jinnah requested his Muslim politicians of the League to hold their session also, simultaneously in Bombay to gain Hindu-Muslim Unity. He neither wanted that the League be absorbed into the Congress nor the Congress be weakened by the sectional politics of the League. He wanted .
Abandoned the Congress (1920).
After it, the policies of the Congress discouraged Jinnah totally. He left the Congress in 1920 because he could not fulfill his desire of the Hindus-Muslim Unity. The gulf between the Hindus and the Muslim broadened and their relations eclipsed. Jinnah went on demanding proper representation for all the minorities of India in all the Legislative Councils. The Congress went against its pledges if Lucknow, 1916.