Musannaf Ibn Abi Shayba 21:87

Abu Bakr (al-Khayl) narrated to us, he said: Jarir narrated to us, from Mansur, from Habib, he said: It was narrated to me that the Prophet, may Allah bless him and grant him peace, used to supplicate, saying: "O Allah, cleanse me with snow, hail, and cold water, and purify me from sins just as a white garment is purified from filth. And distance between me and my sins just as You have distanced between the East and the West."