Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ibnmajah:741 – Jubārah b. al-Mughallis > ʿAbd al-Karīm b. ʿAbd al-Raḥman > Abū Isḥāq > ʿAmr b. Maymūn > ʿUmar b. al-Khaṭṭāb

The Messenger of Allah said: "No people's deeds ever became evil deeds but they started to adorn their places of worship."  

ابن ماجة:٧٤١ – حَدَّثَنَا جُبَارَةُ بْنُ الْمُغَلِّسِ حَدَّثَنَا عَبْدُ الْكَرِيمِ بْنُ عَبْدِ الرَّحْمَنِ عَنْ أَبِي إِسْحَاقَ عَنْ عَمْرِو بْنِ مَيْمُونٍ عَنْ عُمَرَ بْنِ الْخَطَّابِ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ مَا سَاءَ عَمَلُ قَوْمٍ قَطُّ إِلاَّ زَخْرَفُوا مَسَاجِدَهُمْ  

See similar narrations below:

Collected by Suyūṭī