Musnad Ahmad 1153:1523

'Abd al-Rahman ibn Mahdi narrated to us, he said: Isra'il and Zayd ibn al-Hubab narrated to us, he said: Isra'il informed me—the meaning [is the same]—from Ibrahim ibn Muhajir, from Yusuf ibn Mahak, from his mother, from 'Aisha, she said: I said, "O Messenger of Allah, shall we not build for you a house—or a structure—in Mina that will shade you from the sun?" He said, "No, it is only a resting place for whoever arrives at it first."