“One year my family and I went for al-Hajj but cattle became very expensive. I went and bought two sheep, which were expensive. When I examined them closely, I regretted greatly because they were very weak. I brought them and informed him (the Imam) ‘Alayhi al-Salam, about it and he (the Imam) said, ‘If there is any fat on their kidneys, then it is sufficient.’”