Hanafī ruling on whether it is obligatory (wājib) to make up a Sunnah prayer after starting it and then leaving it.

Answer:
If a person starts a Sunnah (or any nafl) prayer and then abandons it (i.e., breaks it before completion) without a valid Shar‘i excuse, it becomes wājib (obligatory) upon him to make up (qaḍā) that prayer. This ruling applies whether the prayer is a sunnah mu’akkadah (emphasized Sunnah) or ghayr mu’akkadah (non‑emphasized Sunnah). Even if the prayer was abandoned due to a legitimate reason (e.g., sudden illness, fear of harm), the preferred view in the Hanafī school is that qaḍā remains wājib in order to rectify the breach of the obligation that was incurred by commencing the prayer.

However, if one merely discontinues the habit of performing a particular Sunnah prayer that he used to offer regularly (without having started that specific prayer), no qaḍā is required. The obligation of qaḍā is only triggered when a specific prayer is actually commenced and then broken or left incomplete.

Detailed Explanation with Hanafī References

1. Commencing a Nafl/Sunnah Prayer Creates an Obligation to Complete It

• Ibn ‘Ābidīn (Radd al‑Muḥtār) states:

  “When a person enters into a nafl prayer, it becomes wājib upon him to complete it… If he breaks it without a valid excuse, he commits a sin and must make it up.”
  (Radd al‑Muḥtār, 2:80, Dār al‑Kutub al‑‘Ilmiyyah)

• Fatāwā al‑Hindiyyah (al‑Fatāwā al‑‘Ālamgīriyyah) clearly affirms:

  “Whoever starts a nafl prayer, it becomes wājib upon him to perform its qaḍā if he breaks it, whether he broke it intentionally or forgetfully, and whether the prayer is a sunnah or an absolute nafl.”
  (Fatāwā al‑Hindiyyah, 1:126)

2. Difference Between Sunnah Mu’akkadah and Ghayr Mu’akkadah

Both types, once started, fall under the same ruling. Imām Abū Ḥanīfah and the majority of Hanafī scholars hold that the obligation to complete and to perform qaḍā upon breaking does not differentiate between mu’akkadah and ghayr mu’akkadah because the act of commencing (takbīrat al‑taḥrīmah) itself binds the worshipper.

• Mullā ‘Alī al‑Qārī (Sharḥ al‑Fiqh al‑Akbar) affirms this principle.
• In Bahishtī Zewar by Mawlānā Ashraf ‘Alī Thānwī, it is clearly written:

  “If you begin a nafl prayer, it becomes wājib to finish it. If you break it, you must make it up later.”
  (Bahishtī Zewar, Part 3, Chapter on Nafl Prayers)

3. Ruling When Abandoned Due to a Valid Excuse

The majority of Hanafī jurists (fuqahā’) hold that even if the prayer is broken for a legitimate reason (e.g., sudden call of nature, fear of a robber, or a parent’s urgent need), qaḍā is still wājib.

• Imām al‑Shawkānī in Nayl al‑Awṭār and Ibn ‘Ābidīn in Radd al‑Muḥtār both quote that “commencing a nafl makes it a wājib” and that a valid excuse does not cancel the duty of qaḍā; it only removes the sin of breaking it.
• Fatāwā Usmānī (by Muftī Taqī ‘Usmānī) reiterates:

  “If one starts a sunnah or nafl prayer and then stops due to an unavoidable reason, he should still make it up when possible, because the duty of completing it was established upon starting.”
  (Fatāwā Usmānī, 1:174)

4. Practical Example

• Scenario: You begin the two rak‘ahs of Sunnah before Fajr. In the middle, you remember an urgent task, or you inadvertently break your wuḍū’, or you simply get distracted and stop.
  Ruling: You must later pray those two rak‘ahs as qaḍā (preferably as soon as you can).
• Scenario: You used to pray the four rak‘ahs of Sunnah before ‘Aṣr every day, but then you stopped offering them altogether.
  Ruling: No qaḍā is required because you did not “start” a particular prayer and leave it incomplete; you merely discontinued the habit.

Summary of the Ruling

| Action | Is Qaḍā Wājib? | Reasoning | |--------|----------------|-----------| | Start a Sunnah/Nafl prayer and break it (with or without excuse) | Yes | The act of commencing makes completion wājib; breaking incurs qaḍā. | | Stop performing a regular Sunnah prayer (habit discontinued) | No | No specific prayer was commenced and left incomplete. | | Break a Sunnah prayer due to a valid excuse | Yes (still wājib) | The wujūb of qaḍā remains; only the sin of breaking is excused. |

Conclusion: If you have begun a specific Sunnah prayer and then abandoned it (i.e., you broke it before finishing), it is wājib upon you to perform the qaḍā of that prayer. If you merely gave up the habit of praying a certain Sunnah, no qaḍā is required.

And Allāh knows best.