Sahih Muslim Book 7, Hadith Number 3134.

Chapter : The Muhajir is permitted to stay for three days in Mecca after Hajj and Umra and not more than this.

Al-‘Ali’ b. al-Hadrami reported Allah’s Messenger (may peace he upon as saying: For a Mahijir, it is only three (days’) stay at Mecca, after completing (the Hajj or ‘Umra) that is allowed, and it seemed as if he was saying that he should not (stay) beyond this (period).