مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 718
Prayer
Mosques and places of Prayer - Section 2
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَا أَمَرْتُ بِتَشْيِيدِ الْمَسَاجِدِ» . قَالَ ابْنُ عَبَّاسٍ: لَتُزَخْرِفُنَّهَا كَمَا زَخْرَفَتِ الْيَهُود وَالنَّصَارَى. رَوَاهُ أَبُو دَاوُد
Ibn ‘Abbas reported God's Messenger as saying, “I was not commanded to build high mosques." Ibn ‘Abbas said, “You* will certainly ornament them as the Jews and Christians did." * The verb is plural addressed by Ibn ‘Abbas to some hearers. Abu Dawud transmitted it.
Mishkat al-Masabih, 718صَحِيحٌ (الألباني)