Did you know . . .

• The total number of Companions: around 114,000 [Abū Zur‘ah], though the documented names reach about 10,000
• Mukthiruʼl-Ḥadīth [about 7 Companions who narrated the bulk of ḥadīth from the Prophet]— Abū Hurayrah (5,374), Ibn ʻUmar (2,630), Anas b. Mālik (2,286), ʻĀʼisha (2,210), Ibn ʻAbbās (1,660), Jābir b. ʻAbdullah (1,540) and Abū Saʻīd al-Khudrī (1,170); no other Companion narrated more than 1000 ḥadīth
• Only 120 Companions known to give fatāwā (in general, they refrained from doing so)
• Most learned Companions—ʻUmar, ʻAlī, Ubayy b. Kaʻb, Zayd b. Thābit, Abuʼl-Dardāʼ and Ibn Masʻūd
• Abu Bakr narrated only 142 ḥadīth due to his early death and preoccupation with governance and more urgent matters
• The Generation (Qarn) of the Companions: When the majority of them lived, ended with the end of ‘Alī’s Caliphate [Ibn Taymiyyah]
• Last living Companion— Abū Ṭufayl ʻĀmir b. Wāthilah al-Laythī (died 100H in Makkah); Last Follower to meet him— Khalaf b. Khalīfah (d 188H)
• About 300 were named ‘Abdullah, though only 3 are famous, known as the ‘Abādilah— Ibn ‘Umar, Ibn ‘Abbās, Ibn Amr b. al-‘Āṣ
• There was no Companion named ‘Abd al-Raḥīm or Ismā‘il

[Sources: Shaykh Walid Basyouni, PhD, 

Mohammad Hashim Kamali, A Textbook of Ḥadīth Studies. The Islamic Foundation, United Kingdom. 2005.]