Nahj al-Balāgha
Hadith 1865٢٩٣. وَقَالَ (عليه السلام): لَا تَصْحَبِ الْمَائِقَ فَإِنَّهُ يُزَيِّنُ لَكَ فِعْلَهُ، وَيَوَدُّ أَنْ تَكُونَ مِثْلَهُ.
293. Amīr al-mu’minīn, peace be upon him, said: Do not associate with a fool because he will beautify his actions before you and long that you too be like him. [1]