Anushasana Parva 167.13

Yudhishthira and Dhritarashtra stood at the feet of the body, taking up palmyra fans, the wives of the lord of the Kurus stood around the body and began to fan it softly. The Pitri sacrifice of the great Bhishma was then duly performed. Many libations were poured upon the sacred fire. The singers of Samans sang many Samans.