Musannaf Ibn Abi Shayba 11:104

Waki’ narrated to us, from Sufyan, from Yahya bin Sa’id, from the one who heard ‘Ata’ bin Yasar, from ‘Abdullah bin ‘Amr, who said: The one who becomes seasick while on a naval military expedition is like the one who is wallowing in his own blood as a martyr on land.