Jami' al-Tirmidhi The Book on Virtues of Jihad Abdul Wahid bin Wasil عبد الواحد بن واصل أبو عبيدة الحداد Ibn Sirin محمد بن سيرين الأنصاري That the Messenger of Allah (ﷺ) said: “Whoever develops some gray hair in the cause of Allah, it shall be a light for him in the Day of Judgement. This Hadith is Hasan Sahih Gharib. As for Haiwah bin Shuraih, (the remainder of his name is) Ibn Yazid Al-Himsi. https://parallelquran.com/hadith/jami-al-tirmidhi-1635/