Ibn Qayyim dedicates an entire chapter to this. He concludes that the deceased can hear the living in specific circumstances (e.g., when addressed directly at the grave after burial), but not in an absolute, continuous manner. He warns against the Sufi practice of calling upon the dead for help, which he considers major shirk.

A: Yes. Kitab al-Ruh wa al-Nafs (The Book of the Soul and the Self) is a shorter treatise, often confused with Kitab ar-Ruh . Make sure you are downloading the correct text.

Kitab al-Ruh (The Book of the Soul), written by the renowned scholar Ibn al-Qayyim al-Jawziyyah

Kitab ar-Ruh (The Book of the Soul) was written by (1292–1350 CE), a student of the famous scholar Ibn Taymiyyah. Unlike philosophical treatises on the soul, this book is entirely rooted in the Qur’an and authentic Sunnah.