Hadith- On Moderation in Worship

In the Name of Allah, the Most Gracious, the Most Merciful.

Aisha reported that that once the Prophet, may Allah bless him and grant him peace, came when a woman was with her. He asked, "Who is this?" She replied, "So-and-so," and told him about the amount she prayed. He said, "Stop! You must only do what you are able. By Allah, Allah does not grow weary [of giving rewards] as you grow weary, and the deeds He likes best is the one in which there is constancy." [Agreed upon]

Riyad as-Salihin (The Meadows of the Righteous) of Iman Mohieddine Annawawi 631-676. Chapter 14, Hadith No. 142.