Sunni The most widespread definition of a companion is someone who met Muhammad, believed in him, and died a
Muslim. The
ibn Hajar al-Asqalani (d. 852 H)(?) said, Anyone who died after
rejecting Islam and becoming an apostate is not considered a companion. Those who saw Muhammad but held off believing in him until after his death are not considered ṣahābah, only tābiʻūn (if they saw the companions). According to Sunni scholars, Muslims of the past should be considered companions if they had any contact with Muhammad, and they were not liars or opposed to him and his teachings. If they saw him, heard him, or were in his presence even briefly, they are companions. All companions are assumed to be just (
ʻudul) unless proven otherwise; that is, Sunni scholars do not believe that companions would lie or fabricate hadith unless they are proven liars, untrustworthy or opposed to Islam. Some Quranic references are important to Sunni Muslim views of the reverence due to all companions; It sometimes admonishes them, as when
Aisha, wife of Muhammad and daughter of the first Sunni
caliph Abu Bakr, was accused of infidelity. Differing views on the definition of a companion were also influenced by the debate between the
Traditionalists and the
Muʿtazila with the traditionalists preferring to extend the definition to as many people as possible and the Mu'tazilites preferring to restrict it.
Shia The Shia as well as some modern-day Sunni scholars like
Javed Ahmad Ghamidi and
Amin Ahsan Islahi follow a stricter definition, believing that not every Muslim who met Muhammad should be considered a companion. In their view, the Qurʻan requires companions to demonstrate a high level of faith; thus, only those individuals who had substantial contact with Muhammad should be considered, e.g., those that lived with him, took part in military campaigns, or proselytized. This stricter definition means that the Shia consider each ṣaḥābiyy differently, depending on what they accomplished. They do not accept that the testimony of nearly all ṣaḥābah are an authentic part of the chain of narrators for a hadith. The Shia further argue that the righteousness of ṣaḥābah can be assessed by their loyalty towards Muhammad's family after his death, and they accept hadith from the
Imams of the Ahl al-Bayt, believing them to be cleansed from sin through their interpretation of the Qurʻan and the
hadith of the Cloak. Shia Muslims believe that some of the companions are accountable for the loss of the caliphate by
Ali's family. As verses 30-33 from
Al-Aḥzāb, Shias believe their argument that one must discriminate between the virtues of the companions by verses relating to Muhammad's wives. Therefore they believe Abu Bakr, Umar, Uthman, Muawiya, Hafsa, Ayesha and Umm Habiba were all hypocrites. ==Hadith==