Markandeyapurana 35.42

35.42

protāya salilaṃ deyaṃ bahirdagdhvā tu gotrikaiḥ /
prathame 'hni caturthe ca saptame navame tathā //

Water ought to be presented to a departed person, after his body has been burnt outside by his relatives,[6] on the first, and fourth, seventh and ninth days of the moon. His relatives should gather together the ashes and bones on the fourth day; it is prescribed that after gathering them together, they should touch their limbs with them. But the sahodakas should perform all the ceremonies, after the gathering together of the remains. If the sapiṇḍas are touched by them, then both the sapiṇḍas and the sahodakas lose their purity.[7]