25 January 1914
An Indian mass meeting in Durban unanimously endorsed the agreement between General J.C. Smuts and Mahatma Gandhi regarding voluntary registration, poll tax, recognition of Indian marriages and other matters. The preliminary agreement between Smuts and Gandhi had been reached in Pretoria earlier in January. The official ratification took place on 30 June 1914 through the exchange of letters between Smuts and Gandhi. Following the Gandhi-Smuts deliberations the Union parliament passed the Indian Relief Act on 26 June 1914, abolishing the £3 poll tax, recognising marriages contracted in terms of traditional Indian rites and facilitating the entry into the Union of the wives of Indians already domiciled locally. Click here to read about the Passive Resistance Campaign of 1913.
References

SAHO, Mahatma Karamcha Ghani timeline 1896-1948, from South African History Online,[online] Available at www.sahistory.org.za [Accessed: 20 December 2013]|Wolpert, S.A., Ghandi's Passion, from Google books, [online], Available at books.google.com [Accessed: 20 December 2013]