Sunan an-Nasa'i 403
سنن النسائي#403SahihIt was narrated that Ibn Abi Awfa said:"The Prophet (ﷺ) used to say: 'Allahumma tahhirni bith-thalji wal-barad wal-ma' al-barid, Allahumma tahhirni min adh-dhunub kama yutahhar ath-thawb al-abyad min ad-danas (O Allah, purify me with snow and hail and cold water, O Allah, purify me of sin as a white garment is cleansed of dirt)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 4:8