Verity the Messenger of Allah (ﷺ) said: There is for every apostle a (special) prayer with which he would pray. I wish I could reserve, my prayer for intercession of my Ummah on the Day of Resurrection.
Sahih Muslim Book 1, Hadith 393
← Previous Hadith 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.

Sahih Muslim Book 1, Hadith 392 Next Hadith → The Messenger of Allah (ﷺ) said: There is for every apostle a prayer, and I intend (if Allah so willed) that I would reserve my prayer for the intercession of my Ummah on the Day of Resurrection.

Sahih Muslim Book 1, Hadith 394