Where does this definition of 乱麻必有头事出必有因 come from?
This entry for 乱麻必有头事出必有因 is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.