(Abdur-Rehman said) Then I went there with him another night...

(Abdur-Rehman said) Then I went there with him another night and the people were praying with Jamaat; Umar said, "Good Bid-at is this..." Allama Qastalani says in his "Irshadus-Sari" (the Commentary of Sahih-Bukhari) : "Umar named it 'Bid-at' because the Holy Prophet did not introduce the system of Jamaat prayer for Taraweeh, nor was it done in the time of (1st Caliph, Abu Bakr) Siddique (r.a.) nor was there any fixed time for it nor any fixed number of Rik'ats." All these innovations were done by the 2nd Caliph and so he himself named it a 'Bid-at'.

The Shias, on the other hand, say that the Sheriat was made complete during the life-time of the Holy Prophet as Allah said in the Qur'an : "Today have I perfected your religion for you and completed my Blessings upon you and have chosen for you Islam as your religion." (Sura 5, Ayat 4); and after the Holy Prophet nobody has any right to add or substract from tha rules of Sheriat. So, 2nd Caliph had…