Sahih al-Bukhari — Oneness, Uniqueness of Allah (Tawheed) — Hadith No: 7474
Translation
Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "For every Prophet there is one invocation which is definitely fulfilled by Allah, and I wish, if Allah will, to keep my that (special) invocation as to be the intercession for my followers on the Day of Resurrection