whoever overburdens himself in his religion

Narrated Abu Hurairah (RA): The Prophet (صلی اللہ علیہ وآلہ وسلم) said, "Religion is very easy and whoever overburdens himself in his religion will not be able to continue in that way. So you should not be extremists, but try to be near to perfection and receive the good tidings that you will be rewarded; and gain strength by worshipping in the mornings, the nights." 

(الفاظ صحیح بخاری کے ہیں)

صحیح بخاری:جلد اول:حدیث نمبر 38

سنن نسائی:جلد سوم:حدیث نمبر 1343

کنزالعمال:جلد دوم:حدیث نمبر 216

کنزالعمال:جلد دوم:حدیث نمبر 257

حکم حدیث: صحیح ۔ قسم حدیث: قولی ۔ نسبت حدیث: مرفوع