Disclaimer: This article is for educational purposes. Readers are encouraged to respect intellectual property laws and purchase physical copies of the Majmu Langitan from reputable publishers (e.g., Maktabah At-Turmusi) when possible, as the physical kitab holds spiritual barakah (blessing) that a digital file cannot replace.

It is named after the famous in Widang, Tuban. This pesantren, founded by KH. Abdul Hadi Zahid, is one of the oldest and most respected traditional Islamic schools in Indonesia.