Musannaf Ibn Abi Shayba 3:782

Waki’ narrated to us, he said: Kathir ibn ‘Abd al-Rahman narrated to us, from ‘Ata’, from ‘A’isha, she said: "Whoever builds a mosque for Allah, Allah will build a house for him." It was said: "And these mosques that are on the road to Mecca?" She said: "And these mosques that are on the road to Mecca."