Al-Lu'lu Wal-Marjan 1869 — The Book of Zuhd and Al-Raqâ'iq (Piety and Softening of Hearts)

Sa'd Narrated from:

I was the first man among the Arabs to shoot an arrow for Allâh's Cause. We used to fight in Allâh's Cause while we had nothing to eat except the leaves of the Hubla and the Samûr trees (desert trees) so that we discharged excrement like that of sheep (i.e. unmixed droppings). Today the (people of the) tribe of Banî Asad teach me the laws of Islâm. If so, then I am lost, and all my efforts of that hard time had gone in vain." ( Sahîh Al-Bukhârî, Hadîth No. 460, Vol. 8)