(If ye have received a blow, the (disbelieving) people have received a blow the like thereof) [3:140].
Said Rashid ibn Sa'd: “When the Messenger of Allah, Allah bless him and give him peace, returned from Uhud, sad and dejected, women whose husbands and sons were killed went to him crying and slapping their faces. Seeing this, the Messenger of Allah, Allah bless him and give him peace, exclaimed: 'Is this how Your Messenger is treated?' And Allah, exalted is He, revealed this verse (If ye have received a blow, the (disbelieving) people have received a blow the like thereof)”.
Asbab Al-Nuzul by Al-Wahidi , trans. Mokrane Guezzou