Verse Quran
5:2 O ye who believe! Violate not the sanctity of the symbols of Allah, nor of the sacred month, nor of the animals brought for sacrifice, nor the garlands that mark out such animals, nor the people resorting to the sacred house, seeking of the bounty and good pleasure of their Lord. But when ye are clear of the sacred precincts and of pilgrim garb, ye may hunt and let not the hatred of some people in (once) shutting you out of the Sacred Mosque lead you to transgression (and hostility on your part). Help ye one another in righteousness and piety, but help ye not one another in sin and rancour: fear Allah: for Allah is strict in punishment.
22:32 Such (is his state): and whoever holds in honour the symbols of Allah, (in the sacrifice of animals), such (honour) should come truly from piety of heart.

The Quran's Verse about sign

sijjin, last ascension of Muhammad in mi`raj, healing, necklace, magic, face, get spoiled - waywardness, screen, secret, glass, confidation, join other gods with Allah, back, left, feast, progeny, promise, Shu`aib, guilt-guilty, gratitude,