question #3 Sahih Muslim 1252a, Book 15, Hadith 237 : What does the mention of the valley of Rauha signify in the context of pilgrimage in Islam?

I heard Abu Huraira (Allah be pleased with him) as narrating from Allah’s Apostle (ﷺ) who said: By Him in Whose Hand is my life. Ibn Maryam (Jesus Christ) would certainly pronounce Talbiya for Hajj or for Umra or for both (simultaneously as a Qiran) In the valley of Rauha