question #1 Sahih Muslim 1188, Book 15, Hadith 33 : What is the significance of spending the night at Dhu’l-Hulaifa during the commencement of pilgrimage rites?

‘Abdullah b. ‘Umar (Allah be pleased with them) reported that the Messenger of Allah (ﷺ) spent the night at Dhu’l-Hulaifa while commencing (the rites of) Pilgrimage and he observed prayer in the mosque.