The Kitáb-i-Aqdas
Notes
169.Gambling   ¶155
The activities that are included in this prohibition have not been outlined in the Writings of Bahá’u’lláh. As both ‘Abdu’l-Bahá and Shoghi Effendi have indicated, it is left to the Universal House of Justice to specify the details of this prohibition. In response to questions about whether lotteries, betting on such things as horse races and football games, bingo, and the like, are included under the prohibition of gambling, the Universal House of Justice has indicated that this is a matter that will be considered in detail in the future. In the meantime, the Assemblies and individuals are counselled not to make an issue of these matters and to leave it to the conscience of the individual believers.1
The House of Justice has ruled that it is not appropriate for funds for the Faith to be raised through lotteries, raffles, and games of chance.2
 
1 Lights of Guidance, p. 359, no. 1203
2 Lights of Guidance, p. 358, no.'s 1202, 1204
Other Related References
Lights of Guidance
Gambling,   pp. 358-59 (1201-1204)