Muwaffaq al-Din Ibn Qudamah al-Maqdisi (1147-1223 CE) was a Hanbali jurist and ascetic born near Jerusalem who settled in Damascus. His legal encyclopedia al-Mughni is a landmark of Islamic law, and he also wrote short works on spirituality and character.
Islam Central has 3 summaries of works by Ibn Qudamah al-Maqdisi, each in short audio and text chapters with a free preview on its page.

True stories of repentance collected by Ibn Qudamah, from the man who killed a hundred to Ka’b ibn Malik’s fifty days, showing that no sin is too great for Allah’s forgiveness.
12 chapters · 38 min
A collection of hadith and narrations on loving one another for the sake of Allah, showing how sincere friendship tastes the sweetness of faith and earns a place under the shade of the Throne.
12 chapters · 32 min
Ibn Qudamah's short, practical treatise against obsessive doubts in worship: why waswasa is not piety, and how following the Prophet's simple way in intention, recitation, wudu and purity sets the heart free.
13 chapters · 29 minSpirituality book summariesThe Prophet ﷺ & the Companions book summariesAll authorsAll book summaries