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
quran:87:9 –

So remind, if the reminder should benefit;  

So remind, admonish by the Qur’ān, in case the reminder should be of benefit, to the one whom you might remind, the one mentioned in ˹the following verse˺ ‘he ˹who fears˺ will be reminded’, in other words, even if it might not be of benefit, for it is of benefit to some but of no benefit to others.
القرآن:٨٧:٩ –

فَذَكِّرْ إِنْ نَفَعَتِ الذِّكْرَىٰ  

{فذكر} عظ بالقرآن {إن نفعت الذكرى} من تذكرة المذكور في سيذكر، يعني وإن لم تنفع ونفعها لبعض وعدم النفع لبعض آخر.