What did the Prophet Muhammad (saw) usually do regarding the timing of the 'Isya' prayer?
 Sayyar b. Salama reported:                      I heard my father asking Abu Barza (al- Aslami) about the prayer of Allah's Messenger (may peace be upon him) I (Shu'ba, one of the narrators) said: Did you hear it (from Abu Barza)? He said: 1 feel as if I am bearing you at this very time. He said: I heard my father asking about the prayer of the Messenger of Allah (may peace be upon him) and he (Abu Barza) making this reply: He (the Holy Prophet) did not mind delaying-some (prayer) i. e. 'Isya' prayer, even up to the midnight and did not like sleeping before observing it, and talking after it. Shu'ba said: I met him subsequently and asked him (about the prayers of the Holy Prophet) and he said: He observed the noon prayer when the sun was past the meridian, he would pray the afternoon prayer, after which a person would o to the outskirts of Medina and the sun was still bright; (I forgot what he said about the evening prayer) ; I then met him on a subsequent occasion and asked him (about the prayers of the Holy Prophet; and he said: He would observe the morning prayer (at such a time) so that a man would go back and would recognise his neighbour by casting a glance at his face, and he would recite from sixty to one hundred verses in it.