Sahih Muslim
Sahih Muslim 196 b
Regarding the saying of the Prophet (saws): "I will be the first of the people to intercede concerning Paradise, and I will be the Prophet with the Greatest Number of Followers."
Arabic hadith text
وَحَدَّثَنَا أَبُو كُرَيْبٍ، مُحَمَّدُ بْنُ الْعَلاَءِ حَدَّثَنَا مُعَاوِيَةُ بْنُ هِشَامٍ، عَنْ سُفْيَانَ، عَنْ مُخْتَارِ بْنِ فُلْفُلٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم "أَنَا أَكْثَرُ الأَنْبِيَاءِ تَبَعًا يَوْمَ الْقِيَامَةِ وَأَنَا أَوَّلُ مَنْ يَقْرَعُ بَابَ الْجَنَّةِ "
Translation
Anas b. Malik reported
The Messenger of Allah (ﷺ) said: Amongst the apostles I would have the largest following on the Day of Resurrec tion, and I would be the first to knock at the door of Paradise.