Narrated Sa'd:
I was the first man among the Arabs to throw an arrow for Allah's Cause. We used to fight in Allah's Cause while we had nothing to eat except the leaves of the Hubla and the Sumur trees (desert trees) so that we discharged excrement like that of sheep (i.e. unmixed droppings). Today the (people of the) tribe of Bani Asad teach me the laws of Islam. If so, then I am lost, and all my efforts of that hard time had gone in vain.(Sahih Al bukhari Volume 8, Book 76,No460





Narrated Abu Musa:
The Prophet said, "Whoever loves the meeting with Allah, Allah too, loves the meeting with him; and whoever hates the meeting with Allah, Allah too, hates the meeting with him."(Sahih Al Bukhari Vol.8,book 76,No.515