Narrated Aisha: One night the Prophet was unable to sleep and said, Would that a righteous man from my companions guarded me tonight. Suddenly we heard the clatter of arms, whereupon the Prophet said, Who is it? It was said, I am Sa`d, O Allah's Apostle! I have come to guard you. The Prophet then slept so soundly that we heard him snoring. Abu `Abdullah said: `Aisha said: Bilal said, Would that I but stayed overnight in a valley with Idhkhir and Jalil (two kinds of grass) around me (i.e., in Mecca). Then I told that to the Prophet .