Blessing on the Prophet, and its Excellence - Section 2 Mishkat al-Masabih 923

Arabic hadith text
وَعَنِ ابْنِ مَسْعُودٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «أَوْلَى النَّاسِ بِي يَوْمَ الْقِيَامَةِ أَكْثَرُهُمْ عَلَيَّ صَلَاة» . رَوَاهُ التِّرْمِذِيّ
Translation

Ibn Mas'ud reported God’s Messenger as saying, “The one who will be nearest me on the day of resurrection will be the one who invoked most blessings on me.” Tirmidhi transmitted it.