Mujahid and Ata narrated from Ibn Abbas that it was revealed concerning Ali ibn Abi Talib, may Allah be pleased with him. He worked for a Jew in exchange for some barley, [and took the barley] (1). He ground one third of it, and they prepared some food from it to eat. When it had finished cooking, a needy person came and asked, so they gave him the food. Then they prepared the second third; when it had finished cooking, an orphan came and asked, so they fed him. Then they prepared the remaining third; when it had finished cooking, a captive from among the polytheists came and asked, so they fed him. They went hungry that day. This is also the view of al-Hasan and Qatadah: the captive was one of the polytheists. This indicates that feeding captives, even if they are polytheists, is a commendable deed for whose reward one may hope. (2)
“Indeed, we feed you only seeking the Countenance of Allah; we seek from you neither recompense nor gratitude. (9) Truly, we fear from our Lord a grim and distressful Day. (10) So Allah will protect them from the evil of that Day and grant them radiance and joy. (11) And He will reward them for their patience with Paradise and silk. (12)”
“Indeed, we feed you only seeking the Countenance of Allah; we seek from you neither recompense nor gratitude.” 181/b The word shukur, meaning gratitude, is a verbal noun, like contracting, entering, and departing. Mujahid and Said ibn Jubayr said: They did not say this aloud, but Allah knew it from their hearts and praised them for it.
“Truly, we fear from our Lord a grim Day”: on that Day, faces will frown because of its terror and severity. Frowning is attributed to the Day, just as one speaks of “a fasting day” and “a standing night.” It was also said that the Day is described as frowning because of the severity it contains. “Distressful”: Qatadah, Mujahid, and Muqatil said that qamtarir means that which draws faces and foreheads tight in a frown. Al-Kalbi said: “Grim” means devoid of any cheerfulness, while qamtarir means severe. Al-Akhfash said: qamtarir is the most severe and most prolonged of days in affliction. A day is described as qamtarir or qumatir when it is harsh and dreadful; the verb derived from it describes a day that has become intensely severe.
“So Allah will protect them from the evil of that Day,” which they fear, “and grant them radiance,” meaning beauty in their faces, “and joy,” in their hearts. “And He will reward them for their patience”: for their patience in obeying Allah and abstaining from disobeying Him. Al-Dahhak said: for their patience in poverty. Ata said: for their patience in hunger. “With Paradise and silk”: Al-Hasan said that Allah will admit them into Paradise and clothe them in silk.