Musannaf Ibn Abi Shayba 23:59

Waki’ narrated to us, he said: Al-A’mash narrated to us, from Sulayman ibn Maysarah and Al-Mughirah ibn Shibl, from Tariq ibn Shihab al-Ahmasi, from Salman, who said: "Indeed, the likeness of the five prayers is like the shares of the spoils of war. Whoever strikes in them with five is better than whoever strikes in them with four, and whoever strikes in them with four is better than whoever strikes in them with three, and whoever strikes in them with three is better than whoever strikes in them with two, and whoever strikes in them with two is better than whoever strikes in them with one. And Allah has not made the one who has a share in Islam like the one who has no share."