Narrator names are parsed automatically from the isnad; identity and biographical details are matched from rijal sources (Itqan narrator profiles, muslimscholars.info).
Narrated Nafi`: Whenever Ibn `Umar started the prayer with Takbir, he used to raise his hands: whenever he bowed, he used to raise his hands (before bowing) and also used to raise his hands on saying, "Sami`a l-lahu liman hamidah", and he used to do the same on rising from the second rak`a (for the 3rd rak`a). Ibn `Umar said: "The Prophet (ﷺ) used to do the same."
'Ubayy said (referring to the hadith above), "We considered this as a saying from the Qur'an till the Surah (beginning with): "The mutual rivalry (for piling up of worldly things) diverts you' (102:1) was revealed."