Hawzah News Agency - It is narrated from him from Ahmad ibn Muhammad from ibn Faddal from the one he narrated from abu ‘Abdallah who has said the following. “Imam abu ‘Abdallah has said that the Holy Prophet said,

مَنْ عَمِلَ عَلَى غَيْرِ عِلْمٍ كَانَ مَا يُفْسِدُ أَكْثَرَ مِمَّا يُصْلِحُ.

‘Those who work without knowledge they destroy more than what they gain.’”

Al-Kāfi, v.1, Book 2, Chapter 12