Zayd reported, "I used to write for the Messenger of Allah ﷺ. He said, 'Write, "Not equal are those believers who sit at home and those who strive in the cause of Allah".'Then Abdullah Ibn Umm Maktum came and said, 'Messenger of Allah, I love to strive in the cause of Allah, but I have a disability, as you can see, and I have lost my sight.'"Zayd continued, "The thigh of the Messenger of Allah ﷺ then pressed down upon my thigh so heavily that I feared it would crush it. Then he said, 'Write, "Not equal are those believers who sit at home, except those who have a disability, and those who strive in the cause of Allah"' [Nisa 4:95]."
حدثنا عبد الرزاق أنا معمر عن الزهري عن قبيصة بن ذؤيب
كنت أكتب لرسول الله ﷺ فقال اكتب لا يستوي القاعدون من المؤمنين والمجاهدون في سبيل الله فجاء عبد الله ابن أم مكتوم فقال يا رسول الله إني أحب الجهاد في سبيل الله ولكن بي من الزمانة وقد ترى وذهب بصري قال زيد فثقلت فخذ رسول الله ﷺ على فخذي حتى خشيت أن ترضها فقال اكتب {لا يستوي القاعدون من المؤمنين غير أولي الضرر والمجاهدون في سبيل الله}
Its isnad is sahih, its narrators are trustworthy and well-known, having been mentioned before. The hadith was narrated by Bukhari 4/30 in jihad, chapter "Those who sit are not equal," and Abu Dawud 3/11 no. 2507 in jihad, chapter "The dispensation for sitting," and Tirmidhi 5/242 no. 3033 in tafsir of Surah Nisa, and he said, hasan sahih, and Nasai 6/9 no. 3100.