Investment of surplus income

Any surplus left out of the income of a tarwad after providing for the customary or legitimate expenses of the tarwad including charges pertaining to the education, marriage, or death of the member of the tarwad, and the charges necessary for zakat and the proper maintenance or upkeep of the tarwad properties, shall be applied, by the karnavan in the purchase of immovable property for the tarwad or otherwise invested to the best advantage of the tarwad.