I heard Abu Umama say, the Messenger of Allah ﷺ came out to a group of elderly men from the Ansar whose beards had turned white. He said, "People of the Ansar, dye them red and yellow, and differ from the People of the Book."I said, "Messenger of Allah, the People of the Book wear trousers but do not wear lower wraps."The Messenger of Allah ﷺ replied, "Wear trousers and wear lower wraps, and differ from the People of the Book."I said, "Messenger of Allah, the People of the Book wear leather socks but do not wear sandals."The Prophet ﷺ said, "Then wear leather socks and wear sandals, and differ from the People of the Book."We said, "Messenger of Allah, the People of the Book trim their beards and let their moustaches grow long."The Prophet ﷺ said, "Trim your moustaches and let your beards grow, and differ from the People of the Book."
سمعت أبا أمامة يقول: خرج رسول الله ﷺ على مشيخة من الأنصار بيض لحاهم، فقال: يا معشر الأنصار، حمروا، وصفروا، وخالفوا أهل الكتاب. قال: فقلت: يا رسول الله، إن أهل الكتاب يتسرولون، ولا يأتزرون. فقال رسول الله ﷺ: تسرولوا، وائتزروا، وخالفوا أهل الكتاب. قال: فقلت: يا رسول الله، إن أهل الكتاب يتخففون، ولا ينتعلون. قال: فقال النبي ﷺ: فتخففوا، وانتعلوا، وخالفوا أهل الكتاب. قال: فقلنا: يا رسول الله، إن أهل الكتاب يقصون عثانينهم، ويوفرون سبالهم. قال: فقال النبي ﷺ: قصوا سبالكم، ووفروا عثانينكم، وخالفوا أهل الكتاب.
Ahmad (22283) and Tabarani in Al-Kabir (7924) both narrated it from the hadith of Zayd bin Yahya, who said, Abdullah bin Ala bin Zabr told us, Qasim told me, and he mentioned it. The wording is Ahmad's.Its chain is hasan due to the discussion surrounding Qasim, who is Qasim bin Abdul-Rahman Dimashqi. There is disagreement about him, but his hadith is hasan, and he was a companion of Abu Umama. It has been said that he heard only from Abu Umama, but the correct view is that he also heard from others besides Abu Umama.Zayd bin Yahya is Zayd bin Ubayd Khuzai, Abu Abdullah Dimashqi, one of the trustworthy teachers of Ahmad.As for his saying "your sibal", the sibal is the plural of sibla, which means the mustache. And his saying "your athanin", athanin is the plural of uthnun, which means the beard.