«لوقلت نعم لوجبت ولو وجبت لم تقوموا بها ولو لم تقوموا بها عذبتم»
The Prophet (peace and blessings be upon him) said:
"Had I said 'Yes', it would have become obligatory; and had it become obligatory, you would not have been able to carry it out; and had you not been able to carry it out, you would have been punished."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام / 5277