"ليتكلف أحدكم من العمل ما يطيق فإن الله تعالى لا يمل حتى تملوا وقاربوا وسددوا "
The Prophet (peace and blessings be upon him) said:
"Each of you should undertake only as much of deeds as he is able to, for Allah Almighty does not tire until you yourselves tire; and keep to moderation and strive to be close to what is right."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام / 5358