آتِي بَابَ الجَنَّةِ يَوْمَ القِيَامَةِ فَأَسْتَفْتِحُ فَيَقُولُ الخَازِنُ: مَنْ أنْتَ؟ فَأَقُولُ: مُحمَّدٌ فَيَقُولُ: بِكَ أُمِرْتُ أنْ لاَ أَفْتَحَ لأَحَدٍ قَبْلَكَ
Anas b. Malik reported:The Messenger of Allah (ﷺ) said: I will come to the gate of Paradise on the Day of Resurrection. and would seek its opening. and the keeper would say: Who art thou? I would say: Muhammad. He would then say: It is for thee that I have been ordered, and not to open it for anyone before thee.
Also in Sahih Muslim 197; Ahmad (3/163); al-Silsila as-sahiha” (774)