The Self-Account
The name al-Muhasibi derives from muhasaba — literally “the taking of account” from oneself, as a merchant takes account of inventory. His defining spiritual practice: at the end of each day, account for every inner state — every intention, every desire, every moment of pride, every self-congratulation — with the same exactness you would review a commercial ledger.
This was not a new idea in Islam. But al-Muhasibi made it a systematic discipline, wrote it down, organized it into categories, and applied it to the full range of human spiritual experience.
The Ri’aya
The Ri’aya li-Huquq Allah wa al-Qiyam biha (Observing the Rights of Allah and Fulfilling Them) is organized into layers: the outer obligations, then the inner states that condition whether those outer obligations have any spiritual value. The sections cover:
- The nature of sincerity (ikhlas) and its enemies
- Riya’ (showing off) — how to detect it in yourself before others detect it
- The states of the heart during prayer, fasting, and other worship
- The diseases of the soul and their treatments
Ahmad ibn Hanbal’s Condemnation
Ahmad ibn Hanbal forbade his students from sitting with al-Muhasibi, reportedly saying: “His books are a bid’a (innovation).” The specific objection: al-Muhasibi used rational philosophical categories (kalam) to analyze inner states — importing Mu’tazilite-adjacent vocabulary into spiritual writing.
Despite this, al-Muhasibi’s books circulated and were copied. Al-Ghazali later drew extensively on him for the Ihya’ — making al-Muhasibi’s categories the backbone of the most influential Islamic spiritual encyclopedia ever written.
See also: Tasawwuf, Sufi Stations Maqamat, Ilm Al Kalam, Seerah Al Hasan Al Basri, Zuhd, Tazkiyah