understanding and insight
Emam Sadeq (pbuh)
اَلْعَامِلُ عَلَى غَیْرِ بَصِیرَهٍ کَالسّائِرِ عَلَى غَیْرِ الطَّرِیقِ لاَ یَزیدُهُ
سُرْعَهُ اَلسَّیْرِ إِلا بُعْداً
Working without understanding and insight is like
travelling in the wrong direction that only takes one
.farther away from the destination
Al-Kafi , vol1