ভূমিকা
Shiavault - a Vault of Shia Islamic Books Khums, the Fund of Independence of Bait Al-mal Is Khums Exclusive To Spoils in Qur’an? The issue of Khums has only been mentioned once in holy Qur'an (and also it is not only Khums which has been mentioned in one verse, but there are lots of rulings of Qur'an which have been mentioned only once in Qur'an and there is no doubt that, this one time expression is enough).
In the first form, this verse only expresses the spoils of war and for Khums of other things we should use tradition, news and correct and reliable cabbalas and there is no problem in that Qur'an points to a part of ruling in proportion and other parts express in tradition.
For example, quintet daily prayer has been mentioned explicitly in holy Qur’an, and also it has been pointed to the prayer of Tawaf (circumambulate the Ka’ba) which is one of obligatory prayers, but nothing has been mentioned about Ayaat (signs) prayer which is agreed by all Muslim, Shiites and Sonnies, and Ghazaa prayer and like them; and we cannot find anyone who says because Ayaat prayer has not been mentioned in Qur'an and it is only available in tradition of Prophet (s.a.) should not be performed, or because it has been pointed to some Ghusls (full ablution) in Qur'an and nothing has been said about some other Ghusls, therefore we should abstain from them.
This is a logic which no Muslim accepts.