Musannaf Ibn Abi Shaybah 37341 — Reports on staying constantly

It is narrated from Ka'b al-Ahbar that he said: I found in the Book of Allah that any believing servant who goes to the mosque morning and evening, and his going to the mosque morning and evening is only to learn or teach some good, or for the remembrance of Allah and reflection, then his likeness in the Book of Allah is that of a mujahid in the path of Allah.