Sahih Muslim Book 030, Hadith Number 5655.
Sahih Muslim Book 30. The Excellent Qualities Of The Holy Prophet (PBUH) And His Companions
Chapter : The eminence of our Prophet (may, peace be upon him)over the whole creation.
Abu Huraira reported Allah’s Messenger (may peace be upon him) as saying: I shall be pre-eminent amongst the descendants of Adam on the Day of Resurrection and I will be the first intercessor and the first whose intercession will be accepted (by Allah).
Source : Hadith Collection