during the withdrawal of the messenger of allâh [pbuh] up to the cover of the mountain, a big rock blocked his way. the prophet [pbuh] tried to mount it, but having worn a short heavy armour, and being seriously wounded — he could not ascend it. readily enough talha sat in a position that enabled the prophet [pbuh] to stand on his back. then he lifted him up till he stood on it. the prophet [pbuh] then said: "talha, after this job, is eligible for the garden (paradise)."[ibn hisham 2/86]