Musannaf Ibn Abi Shayba 1:1776

Ibn Fudayl narrated to us, from Yazid, from Ibn Abbas, who said: "Indeed, the Shaytan comes to one of you while he is in prayer and blows into his urethra until he makes him think that he has broken his wudu. So whoever perceives that from himself, let him sprinkle water [on his private parts]. And whoever perceives anything of that, let him say: 'It is the work of water.'"