Sample Entries and the Depth of Coverage

The range of entries in Al-Isabah illustrates both the work's comprehensiveness and the variety of evidence that Ibn Hajar evaluated in determining companion status. A few representative examples show how the work functions in practice.

For a major companion like Abu Hurayrah, the entry is extensive: Ibn Hajar traces the debate about his real name (multiple names are reported in the sources), documents his conversion and his years with the Prophet, records the number of hadiths attributed to him (one of the largest of any companion), names his major students, and evaluates the evidence for various claims about his life. The entry for Abu Hurayrah distills a vast amount of biographical and hadith-critical literature into a coherent account.

For a minor companion — a figure who appears only in a single hadith or whose name is preserved only in a single chain of transmission — the entry may be brief: a few lines documenting the evidence for companion status and any reports attributed to the figure. These brief entries for obscure companions are often the only systematic treatment of that figure anywhere in classical literature.

For contested cases — individuals claimed as companions by some sources but disputed by others — Ibn Hajar examines the evidence carefully and reaches a reasoned conclusion while noting the disagreement. These entries are particularly valuable because they show the analytical process at work: examining competing claims, evaluating the evidence for each, and reaching a judgment that distinguishes what can be established from what remains uncertain.

The entries for women companions are notable for their care and completeness. Ibn Hajar includes detailed biographies of the major female companions — Khadijah, Aisha, Fatimah, Umm Salamah, and many others — and shorter entries for the hundreds of lesser-known women who had any recorded contact with the Prophet. This systematic attention to women companions reflects the importance of women in the transmission of prophetic knowledge and their formal status as members of the companion generation.