Answered by Shaykh Rami Nsour
Question: Assalam’aleykum,
Is it allowed to participate in a contest whith a cash prize such as in track and field competition?
Answer: Wa alaykum as salam wa rahmatullah,
The Chapter of Musabaqa (Races) mentions very specific races and competitions that one may include a cash prize on. Foot races are not included according to the Maliki school. Also, the prize has to be put up by people not participating in the race.
Rami Nsour
source: http://seekershub.org/ans-blog/2015/05/24/is-it-allowed-to-participate-in-contest-where-there-is-a-cash-prize-maliki/