Detailed explanations on the merits of fasting, prayer (Tahajjud, Tarawih, Witir), and seeking knowledge.

Kitab Durratun Nasihin (The Pearl of the Advisors), written by Sheikh Utsman bin Hasan bin Ahmad as-Syakir al-Khaubawiy

While there are many Indonesian translations available, a complete, free PDF of Kitab Durratun Nasihin translated into Sundanese

Cariosna: "Saha waé anu diajar élmu agama lain lantaran ridho Allah, tapi ngan saukur hayang meunang pangkat atawa kamega di dunya, mangka manehna moal ngarasakeun seungitna surga di poé kiamat."