Modex: There is heavenly reward that is effort orientated along the lines of ‘Lfum Tzarah Agra’ and ‘Echod hamarbeh v’echod hamam’it ibilvad sheyechaven es libo lashamayim’ – and the outcome is secondary.
And there is heavenly reward that is outcome orientated regardless of effort e.g. Chazal say that if you mistakenly drop money and a poor person picks it up – you get a reward for that and Chazal say that Haman’s grandchildren learnt Torah in Bnei Brak which some explain as his reward for the huge Kiddush Hashem that resulted from his downfall even though he had no such intention.