Ibn Umar used to spend the night at Dhu Tuwa. In the morning he would bathe and instruct those with him to bathe as well, then he would enter Mecca through the upper pass. When he left, he would leave through the lower pass, and he stated that the Prophet ﷺ used to do the same.
حدثنا حماد عن عبد الله
كان ابن عمر يبيت بذي طوى فإذا أصبح اغتسل وأمر من معه أن يغتسلوا ويدخل من العليا فإذا خرج خرج من السفلى ويزعم أن النبي ﷺ كان يفعل ذلك
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Its isnad is sahih, and it is a longer version of 4625, 5231, see also 5600, 6284. Malik related something similar to it in Muwatta 1:302-303, from Nafi from Ibn Umar, as a mawquf report, see also Sharh Zurqani 2:146-147.