I read in Bihishti Zever written by Maulana Ashraf Ali Thanvi that the Masbuq should stand after the Imam's second Salam. Kindly correct and enlighten me in light of Ahadith.
A: Haamidaw wa Musalliyaa
With regards to when the Masbooq should stand up to complete the portion of the Salah that he missed, the principle is that the Masbooq should wait to ensure that there is no Sajda-e-Sahw upon the Imaam. If the Masbooq becomes certain of this after the first salaam (When the imam commences the second Salam), then the Masbooq could stand and complete his Salah. (Shaami 1/596)
And Allah Ta'ala Knows Best
Shafiq Jakhura (Mufti)