When Imam Zain Ul A’abideen (May Allah be well pleased with him) passed away, signs of bearing heavy loads could be seen on his back. On making enquiries, it was learnt that there 100 families in Madina for whom the Imam would carry food on his own back and give it to them.
(Sifat Us Safwah, Vol. 2, Pg. No. 96)