Miserliness as the root of all vices
Nahj al-Balāgha|Volume 1|Book 3|Chapter 378
۳۷۸. وَقَالَ (عليه السلام): الْبُخْلُ جَامعٌ لِمَسَاوِئِ الْعُيُوبِ، وَهُوَ زِمَامٌ يُقَادُ بِهِ إِلَى كُلِّ سُوءٍ.
378. Amīr al-mu’minīn, peace be upon him, said: Miserliness contains all other evil vices and is the rein with which one can be led to every evil.