Verily, the example of the righteous companion and the evil companion is like that of the carrier of the musk and the blower of the bellows

عَنْ أَبِي مُوسَى رضي الله عنه عَنِ النَّبِيِّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِنَّمَا مَثَلُ الْجَلِيسِ الصَّالِحِ وَالْجَلِيسِ السَّوْءِ كَحَامِلِ الْمِسْكِ وَنَافِخِ الْكِيرِ، فَحَامِلُ الْمِسْكِ: إِمَّا أَنْ يُحْذِيَكَ، وَإِمَّا أَنْ تَبْتَاعَ مِنْهُ، وَإِمَّا أَنْ تَجِدَ مِنْهُ رِيحًا طَيِّبَةً، وَنَافِخُ الْكِيرِ: إِمَّا أَنْ يُحْرِقَ ثِيَابَكَ، وَإِمَّا أَنْ تَجِدَ رِيحًا خَبِيثَةً».

Abu Mūsa (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "Verily, the example of the righteous companion and the evil companion is like that of the carrier of the musk and the blower of the bellows. The carrier of the musk will either give you, or you will buy from him, or you will get a pleasant smell from him, and the blower of the bellows will either burn your clothes or you will get an offensive smell."

Source · Agreed upon

From the Hadith Encyclopedia (hadeethenc.com).