The Vishnu Purana
Chapters
The Vishnu Purana: Book III: Chapter XIII

[paragraph continues] The former class of relatives may use beds, but they must still refrain from unguents and flowers, and must observe continence, after the ashes and bones have been collected (until the mourning is over). When the deceased is a child, or one who is abroad, or who has been degraded, or a spiritual preceptor, the period of uncleanness is but brief, and the ceremonies with fire and water are discretional. The food of a family in which a kinsman is deceased is not to be partaken of for ten days 8; and during that period, gifts, acceptance, sacrifice, and sacred study are suspended. The term of impurity for a Brahman is ten days; for a Kshatriya, twelve; for a Vaiśya, half a month; and a whole month for a Śúdra 9. On the first day after uncleanness ceases, the nearest relation of the deceased should feed Brahmans at his pleasure, but in uneven numbers, and offer to the deceased a ball of rice upon holy grass placed near the residue of the food that has been eaten. After the guests have been fed, the mourner, according to his caste, is to touch water, a weapon, a goad, or a staff, as he is purified by such contact. He may then resume the duties prescribed for his caste, and follow the avocation ordinarily pursued by its members.

"The Śráddha enjoined for an individual is to be repeated on the day of his death (in each month for a year) 10, but without the prayers and rites performed on the first occasion, and without offerings to the Viśwadevas. A single ball of food is to be offered to the deceased, as the purification of one person, and Brahmans are to be fed. The Brahmans are to be asked by the sacrificer if they are satisfied; and upon their assent, the prayer, 'May this ever satisfy such a one' (the deceased) is to be recited.