I never believe in love at first sight, except for books. Shaidul Khathir by Ibnul Jauzi by far is one of the most brilliant books I have in my library. So is Raudhatul Muhibbin wa Nuzhatul Musytaqin or widely known as Taman Orang-Orang Jatuh Cinta dan Memendam Rindu by Ibn Qayyim al Jauziyyah. Those two are my favorite.
Poetic, yet deep and meaningful. Ibnul Jauzi and Ibnul Qayyim—rahimakumullah—are one of the biggest authors who influence and inspire me in most of my writings.