Regarding the saying of the Prophet (ﷺ): "I will be the first of the people to intercede concerning Paradise, and I will be the Prophet (ﷺ) with the Greatest Number of Followers."

Sahih Muslim · Book 1 · Hadith 196 c

وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا حُسَيْنُ بْنُ عَلِيٍّ، عَنْ زَائِدَةَ، عَنِ الْمُخْتَارِ بْنِ فُلْفُلٍ، قَالَ قَالَ أَنَسُ بْنُ مَالِكٍ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ أَنَا أَوَّلُ شَفِيعٍ فِي الْجَنَّةِ لَمْ يُصَدَّقْ نَبِيٌّ مِنَ الأَنْبِيَاءِ مَا صُدِّقْتُ وَإِنَّ مِنَ الأَنْبِيَاءِ نَبِيًّا مَا يُصَدِّقُهُ مِنْ أُمَّتِه…

Anas b. Malik said: The Messenger of Allah (ﷺ) said: I would be the first intercessor in the Paradise and no apostle amongst the apostles has been testified (by such a large number of people) as I have been testified. An…

Sahih Muslim · Book 1 · Hadith 197

وَحَدَّثَنِي عَمْرٌو النَّاقِدُ، وَزُهَيْرُ بْنُ حَرْبٍ، قَالاَ حَدَّثَنَا هَاشِمُ بْنُ الْقَاسِمِ، حَدَّثَنَا سُلَيْمَانُ بْنُ الْمُغِيرَةِ، عَنْ ثَابِتٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ آتِي بَابَ الْجَنَّةِ يَوْمَ الْقِيَامَةِ فَأَسْتَفْتِحُ فَيَقُولُ الْخَازِنُ مَنْ أَنْتَ فَأَقُولُ مُحَمَّدٌ ‏.‏ فَيَقُولُ بِك…

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…