An interesting piece of history is mentioned by Professor Ishtiaq Ahmed in his book "The Punjab Bloodied, Partitioned and Cleansed: Unravelling the 1947 Tragedy"

Viceroy Mountbatten brokered talks between Jinnah and the Sikhs during May 14-16 with a view to keeping the Punjab united. Jinnah offered very generous terms. Hardit Singh Malik who acted as spokesperson of the Sikhs reported the following concluding remarks:

“This put us in an awkward position. We were determined not to accept Pakistan under any circumstances and here was a Muslim leader offering us everything. What to do? Then I had an inspiration and I said, ‘Mr Jinnah, you are being very generous. But, supposing, God forbid, you are no longer there when the time comes to implement your promises?’ His reply was astounding...He said, ‘My friend, my word in Pakistan will be like the word of God. No one will go back on it.’ There was nothing to be said after this and the meeting ended” (op. cit., page 213).

Link to full article:

http://dailytimes.com.pk/opinion/08-Sep-12/the-bloody-punjab-partition-viii-s