All perfect praise be to Allaah, The Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
It is permissible for the pilgrim who intends to perform Ifraad Hajj to stay in Makkah during the night as long as he maintains the state of Ihraam after having performed the arrival Tawaaf. He must not commit any violation of Ihraam until he leaves to Mina on the day of Tarwiyah. This practice is even an act of the Sunnah and was observed all over the ages by Muslims. Allaah Knows best.