Musnad Ahmad 2276

Ibn 'Abbas reported that Allah's Messenger (ﷺ) stayed in Mecca for fifteen years (after his advent as a Prophet) and he heard the voice of Gabriel and saw his radiance for seven years but did not see any visible form, and then received revelation for ten years, and he stayed in Medina for ten years.

أَقَامَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِمَكَّةَ خَمْسَ عَشْرَةَ سَنَةً يَسْمَعُ الصَّوْتَ وَيَرَى الضَّوْءَ سَبْعَ سِنِينَ وَلاَ يَرَى شَيْئًا وَثَمَانَ سِنِينَ يُوحَى إِلَيْهِ وَأَقَامَ بِالْمَدِينَةِ عَشْرًا ‏.‏

Narrated by Ibn ‘Abbās

He said God's messenger stayed in Mecca fifteen years hearing the voice and seeing the light for seven years, but seeing nothing along with it, and eight years during which revelations were given to him. He stayed in Medina ten years and died at the age of sixty-five. (Bukhari and Muslim.)

وَعَنْهُ قَالَ: أَقَامَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِمَكَّةَ خَمْسَ عَشْرَةَ سَنَةً يَسْمَعُ الصَّوْتَ وَيَرَى الضَّوْءَ سَبْعَ سِنِينَ وَلَا يَرَى شَيْئًا وَثَمَانِ سِنِينَ يُوحَى إِلَيْهِ…