Reference for Gittin 144:7

לרבא פשיטא ליה לרב הונא מספקא ליה

[does it not]? — Raba was quite sure on the point, R. Huna was uncertain. Alternatively I may suppose [Raba to have meant that] the man does say 'from to-day', and that he was giving the view of the Rabbis, and that his purpose was to explain in regard to these various expressions that 'supposing I die' is equivalent to 'if I die', and 'when I die' to 'after [my] death'.

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