Sluggards lose rights and backbiters lose friends
Nahj al-Balāgha|Volume 1|Book 3|Chapter 239
٢٣٩. وَقَالَ (عليه السلام): مَنْ أَطَاعَ التَّوَانِيَ ضَيَّعَ الْحُقُوقَ، وَمَنْ أَطَاعَ الْوَاشِيَ ضَيَّعَ الصَّدِيقَ.
239. Amīr al-mu’minīn, peace be upon him, said: He who is a sluggard loses his rights and he who believes in the backbiter loses his friend.