Nahj al-Balāgha
Hadith 2216۳۷۶. وَقَالَ (عليه السلام): إِنَّ الْحَقَّ ثَقِيلٌ مَرِيءٌ وَإِنَّ الْبَاطِلَ خَفِيفٌ وَبِيءٌ.
376. Amīr al-mu’minīn, peace be upon him, said: Certainly, right is weighty and wholesome while wrong is light and epidemical.