Garlands are mentioned in the Quran in these verses:
[5:2] O you who believe, do not violate the rites instituted by God, nor the Sacred Months, nor the animals to be offered, nor the garlands marking them, nor the people who head for the Sacred Shrine (Ka`bah) seeking blessings from their Lord and approval. Once you complete the pilgrimage, you may hunt. Do not be provoked into aggression by your hatred of people who once prevented you from going to the Sacred Masjid. You shall cooperate in matters of righteousness and piety; do not cooperate in matters that are sinful and evil. You shall observe God. God is strict in enforcing retribution.
[5:97] God has appointed the Ka`bah, the Sacred Masjid, to be a sanctuary for the people, and also the Sacred Months, the offerings (to the Sacred Masjid), and the garlands marking them. You should know that God knows everything in the heavens and the earth, and that God is Omniscient.
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