The question of applying perfume before entering احرام is one where the four schools of jurisprudence differ based on their interpretation of the hadith evidence. The majority position, held by the Shafi'i and Hanbali schools, is that it is Sunnah (مستحب) to apply perfume to the body — but not to the احرام garments — before making the intention for احرام at the miqat. This is directly supported by the practice of نبی کریم Muhammad (صلی اللہ علیہ وسلم), as reported by his wife Aisha (may Allah be pleased with her).
Aisha narrated that she used to perfume the Messenger of Allah (صلی اللہ علیہ وسلم) before he entered احرام, and she could see the traces of musk glistening on his scalp and in his hair parting even after he had assumed احرام. According to scholars who hold this position, the prohibition of perfume during احرام applies to new application after entering the state of احرام, not to residual fragrance from before. The perfume should be applied to the body (head, beard, skin) but should be avoided on the احرام garments themselves.
The Hanafi and Maliki schools take a more cautious view. They consider it disliked (makruh) to apply perfume immediately before احرام if its scent will remain perceptible after entering the sacred state. Their reasoning is based on the hadith prohibiting the muhrim from using perfume, and they view lingering fragrance as tantamount to ongoing use. Imam Malik specifically noted that using perfume that lingers is problematic, though no fidyah is required since the application occurred before احرام. Despite this difference, all scholars agree that there is no sin or penalty for residual fragrance that naturally fades.