[We said], "And take in your hand a bunch [of grass] and strike with it and do not break your oath."1 Indeed, We found him patient, an excellent servant. Indeed, he was one repeatedly turning back [to Allāh].
Translation: Saheeh International (English)
1 At a point during his illness, Job became angry with his wife and swore that if he recovered, he would punish her with one hundred lashes. According to Allāh's instruction, the oath was fulfilled by striking her once with one hundred blades of grass.
When Job became angry with his wife, he swore an oath he will lash her a hundred times, so I said to him: “O Job, take a bunch of stalks in your hand and hit her with them, to fulfil your oath. And do not break the oath you made”. So he took a bunch of stalks and hit her with them. I found him to be patient in what I afflicted him with. What an excellent servant he was. He would turn to Allah abundantly.