Other Companions and Successors (Taba’een) also offered 20 Raka’at of Taraweeh. The Hadith about this follow.
There is a Hadith in Musannaf Ibn Abi Shaiba:
Translation: Hadhrat Abdul ‘Aziz bin Raf‘ee says: Hadhrat Ubai bin Ka‘ab (May Allah be well pleased with him) used to lead the people in 20 Raka’at of Taraweeh in the month of Ramadhan and used to lead the people in 3 Raka’at of Witr. (Musannaf Ibn Abi Shaiba, Vol 2, Pg No: 285, Bab #227, Hadith No: 5; Tuhfatul Ahwazi, Bab Ma Ja'a Fi Qiyami Shahri Ramadhan)
The practice of Hadhrat ‘Abdullah bin Mas’ud (May Allah be well pleased with him):
In ‘Umdatul Qari, Allama Badruddin ‘Aini has narrated a Hadith on the authority of Imam A‘amash in which it is clearly reported that Hadhrat Abdullah bin Mas‘ud used to lead people in 20 Raka’at of Taraweeh.
Translation: Hadhrat A‘amash narrates on the authority of Hadhrat Zaid bin Wahb (May Allah be well pleased with him) that he said: In the month of Ramadhan, Hadhrat Abdullah bin Mas‘ud (May Allah be well pleased with him) used to lead us and Imam A‘amash narrates that he used to lead the people in 20 Raka’at of Taraweeh and 3 Raka’at of Witr. (Umdatul Qari Sharh Sahih Bukhari, Kitab Ut Taraweeh, Vol 8, Pg No: 246)
The consensus of the Companions on 20 Raka’at Taraweeh
In Mughni there is a Hadith of Hadhrat Ali (May Allah be well pleased with him) that he (Hadhrat Ali) commanded a person to lead the people in 20 Raka’at of Taraweeh in Ramadhan. In the explanation of this Hadith, Imam ‘Aini (May Allah shower His mercy on him) writes: This practice of the Companions is like their consensus. (Umdatul Qari Sharh Sahih Bukhari, Kitab Ul Tahajjud)
Imam Zail‘ai (May Allah shower His mercy on him) writes:
Translation: Our proof is the Hadith which Imam Baihaqui (May Allah shower His mercy on him) has narrated with a rigorously-authenticated chain of narration that the Companions would offer 20 Raka’at of Taraweeh in the caliphate of Hadhrat ‘Umar (May Allah be well pleased with him). This practice continued in the eras of Hadhrat ‘Uthman and Hadhrat ‘Ali (May Allah be well pleased with him) and in this way the Companions came to a consensus (on 20 Raka’at Taraweeh).
Hadhrat Mulla Ali Qari (May Allah shower His mercy on him) writes in his commentary on Mishkaat Sharh Mirqaat:
Translation: Nevertheless, the Companions have agreed that Taraweeh is of 20 Raka’at. (Mirqat Ul Mafateeh, Kitab Us Salaat, Bab Qiyami Shahri Ramadhan)
Hadhrat Imam Sarkhisi Hanafi (May Allah shower His mercy on him) writes in Mabsut:
Translation: The consensus of the Companions on 20 Raka’at of Taraweeh is the evidence that all the Fardh and Wajib Salaat in the day and night add up to 20 and this number will be completed when Witr is considered as Wajib. (Mabsut Sarkhisi, Kitab Us Salaat, Al Faslil Awwal Fi ‘Adadir Raka’at)