I will also try to highlight different analytical aspects of the Hadiths, practices of the Ummah for the last 1400 years, the saying and verdicts of the Salaf and answers to some of the arguments which are put forward by the other side.
So in this post you will see the Daleel and that Taraweeh and Tahajjud are two seperate prayers.
Part 1 - Taraweeh is 20 Rakaats
20 Rakaat Taraweeh Proven by the Statement of Narrator Abu Usman Al Basri(R)
Reference: Mu'arif As Sunan
Imam Bayhaqi(R) considers Abu Usman Al Basri(R) Siqah (Trustworthy) and thats is why he has approved and attested this hadith as Sahih.
Reference: Mu'arif As-Sunan Wal Aasaar Book 3, Page 15