Kitab az-Zakat, as-Sawm, and al-Hajj

The zakah, fasting, and pilgrimage sections of Sunan an-Nasai illustrate his characteristic combination of comprehensive coverage and strict hadith criticism applied to the three pillars of Islam following prayer. In each section, an-Nasai organizes his material with greater chapter granularity than most other collections, breaking large topics into narrow questions and dedicating separate chapters to each sub-issue.

The zakah section opens with hadiths establishing the obligation and then moves through the nisab and rates for each category of zakatable wealth with methodical precision. An-Nasai's treatment of agricultural produce zakah is particularly detailed, covering the question of what counts as the measuring moment for the nisab, the difference between rain-watered and manually irrigated land (the first taxed at ten percent, the second at five), and the categories of produce that require payment. His chains for several key narrations in this area are among the strongest available in any collection.

The zakah al-fitr chapters in an-Nasai cover the quantities prescribed — a sa' of dates, barley, raisins, or dried cheese from every Muslim — and the hadiths that establish the timing (before the Eid prayer) and recipients. An-Nasai records more carefully than most collectors the chain for the Abu Sa'id al-Khudri narration specifying food categories, which became central to the debate over whether cash payments are permitted in lieu of food.

The fasting section follows a structure moving from the lunar sighting and its conditions through the essential elements of the fast to the acts that break it. An-Nasai's coverage of the types of fasts — obligatory Ramadan, voluntary fasting on Mondays and Thursdays, the fasting of Dawud (alternating days), and the prohibition of singling out Friday — is organized as a taxonomy that reflects the juristic concern to distinguish obligatory from recommended from disliked.

A distinctive feature of an-Nasai's fasting section is his detailed treatment of the hadiths on suhoor (the pre-dawn meal). He records multiple narrations encouraging it and establishing that the barakah (blessing) of the fast is tied to this meal, as well as the hadiths on the permissibility of eating until the Fajr adhan begins. His careful presentation of the chain variants allowed later scholars to determine which narrations on the topic were most reliably transmitted.

The Hajj section of an-Nasai's Sunan preserves a number of hadiths not found in the two Sahihs, including some on the details of Hajj rites that address sub-questions the two main collections left unresolved. His treatment of ihram and its conditions, the specific boundaries of the Miqat for pilgrims from different directions, and the detailed sequence of Hajj rites is organized with the same granularity as his treatment of prayer, reflecting his belief that the legal precision of the Quran and Sunnah extends to every detail of worship.

Taken together, the zakah, fasting, and pilgrimage sections of an-Nasai's Sunan provide a reliable and analytically precise reference for scholars working on the fiqh of these three pillars. His strict standards mean that hadiths present in his collection carry additional weight compared to those found only in less critically demanding sources, making the Sunan an important corroborating reference for any legal argument built on hadith evidence.