قدح

شَجَرٌ مُتَقَادِحٌ ذ Trees having soft, weak, branches, which, when the wind puts them in motion, blaze forth with fire; but which when used for producing fire for a useful purpose, yield no fire at all: whence one says to him who has no ground of pretension to respect or honour, nor parentage, genealogy, or pedigree, of a sound quality, زَنْدَاكَ لِلْمُتَقَادِحِ (assumed tropical:) [lit. Thy two pieces of stick, or wood, for producing fire pertain to the trees that have soft and weak branches, &c.]. (TA.)