Assalaamu `alaykum
Sorry, yes what I meant was after the first tashahud. But I used the wording rising up from the second rak'ah because it was what I remembered from the hadeeth. Looking it up it says:
Ibn ‘Umar (radiAllaahu anhu) narrated that when the Prophet

saw2

started his prayer, he would say “Allaahu akbar” and raise his hands, when he bowed in rukoo’ he would raise his hands, when he said “Sami’a Allaahu liman hamidah [Allaah hears those who praise Him]” he would raise his hands, and when he stood up after two Rak’ahs he would raise his hands. (Reported by al-Bukhaari, 2/222; Abu Dawood, 1/197).
Having said that, I hadn't even thought of the point you mentioned (the third rak`ah in witr), so perhaps the better wording would be after the tashahud, but it's interesting that in this hadeeth it mentions it after the second rak`ah - وَإِذَا قَامَ مِن الرَّكْعَتَيْنِ رَفَعَ يَدَيْهِ - (though Islam-QA clarifies that it means after the first tashahud).