From Sahih Bukhari (Hadith 5183):
Narrated Sahl bin Sa`d:Abu Usaid As-Sa`idi invited the Prophet (ﷺ) to his wedding party and his wife served him on that day, and she was the bride. She said (or Sahl said), "Do you know what she soaked for Allah's Messenger (ﷺ)? She soaked some dates for him (in water) in a drinking bowl overnight
Reference: Bukhari 5183