Musannaf Ibn Abi Shayba 3:4082

Shababa narrated to us, he said: Ibn Abi Dhi'b narrated to us, from Salih, the freed slave of al-Taw'ama, from al-Sa'ib ibn Khabbab, who said: I used to not pray except in the mosque. Zayd ibn Thabit said to me: A man’s prayer in his house is better than his prayer in the mosque, except for the obligatory prayer. And a man’s prayer in his house is light.