Musannaf Ibn Abi Shayba 33:504

Malik narrated to us, he said: Zuhayr narrated to us, he said: Abu Ishaq narrated to us, from the wife of Abdullah ibn Rawahah, that Abdullah ibn Rawahah had two mosques: a mosque in his house and a mosque in his dwelling. When he wanted to go out, he would pray in the mosque that was in his house, and when he entered, he would pray in the mosque that was in his dwelling. And wherever the prayer overtook him, he would kneel down.