Mishkat al-Masabih 4 Prayer كتاب الصلاة 347

وَعَنِ ابْنِ مَسْعُودٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنَّ لِلَّهِ مَلَائِكَةً سَيَّاحِينَ فِي الْأَرْضِ يُبَلِّغُونِي مِنْ أُمَّتِيَ السَّلَامَ» . رَوَاهُ النَّسَائِيّ والدارمي

He also reported God’s Messenger as saying, “God has angels who travel about in the earth and convey to me greetings from my people.” Nassa’i and Darimi transmitted it.