Dreaming of late uncle who cheated nephew

Assalamu alaikum.warah matul laahi wabarakatu, 12 years ago a nephew and uncle (chacha) were in a business together 50 per cent each, due to not being paid a salary and oppression from the uncle , the nephew left the shop and the agreement was drawn up where the uncle was to pay the nephew half the percentage of the goods and half share of the amount of the property, within a specified period of 3 months, till today the nephew hasn’t received any share on the property or goods of the shop, it was brought to the attention by an outsider that the uncle closed the shop after few years and he rented the shop out, the nephew was not told about this, the nephew did ask the uncle a few times to sort out this issue of not being paid anything but he just ignored it, now 3 weeks ago, the uncle passed away leaving all of the above unsettled , the nephew is aware that the rent of the shop is being paid to his son, please advise as to what should be done??? Its 3 weeks that the uncle uncle passed away, and nephews sister had 2 very disturbing dreams of the uncle, 1 he was carrying a lot of bags and looking worried, and 2nd dream he hugged her and confessed thrice that he didn’t give them anything and he looked verry worried!
Jazakalah
Kindly advise reply to this email
P.s the agreement is with the bookeeper, but he claims he misplaced the agreement and cannot find it . Please advise
In the instance if he does find the agreement or not.