The false hood of a spindler web chokes the cavemouth

• the falsehood of a spider's web chokes the cavemouth: according to legend, Mohammed once hid from his enemies in a cave; while he slept, a spider spun a web across the mouth of the cave and a bird laid her eggs in front of it, leading Mohammed's pursuers to conclude that no one had entered the cave for days

• spindel: (Swedish) spider

• spin a yarn: to tell a tale tale; to spread falsehoods