Abū Huraira said

I had been placed in charge of the zakāt of Ramadān by Allah's Messenger ﷺ, and when someone came to me and began to take up handfuls of the food, I seized him and told him I was certainly going to take him before Allah's Messenger ﷺ. But when he said, “I am needy, have children dependent on me, and my need is great,” I let him go. In the morning the Prophet (ﷺ) asked, “What happened to your prisoner last night, Abū Huraira?” and I replied, “ Messenger of Allah , he complained of great need and of having children dependent on him, so I had pity on him and let him go.” He said, “He lied to you, and he will come back.” I realised that he would return because Allah's Messenger ﷺ had told me so, and therefore I lay in wait for him. When he came and began to take up handfuls of the food, I seized him and told him I was certainly going to take him before Allah's Messenger ﷺ; but when he said, “Let me go, for I am needy with children dependent on me, and I shall not return” I had pity on him and let him go. In the morning Allah's Messenger ﷺ asked me, “What has happened to your prisoner, Abū Huraira?” and I replied, “Messenger of Allah, he complained of great need and of having children dependent on him, so I had pity on him and let him go.” He said, “He has certainly lied to you, and he will come back,” so I lay in wait for him, and when he came and took up handfuls of food I seized him and said, “I am certainly going to take you before Allah's Messenger ﷺ, for this is the third time you assert you will not return, and then you do.” He said, “If you let me go I will teach you some words by which Allah will benefit you. When you go to your bed recite the Throne Verse (Qur’ān 2:255), ‘Allah, there is no Allah but He, the Living, the Eternal’ to the end of the verse, for a guardian from Allah will then remain over you and no devil will come near you till the morning.” I therefore let him go, and in the morning Allah's Messenger ﷺ asked me, “What has happened to your prisoner?” I replied, “He asserted that he would teach me some words by which Allah would benefit me.” He said, “He has certainly told you the truth though he is a great liar. Do you know to whom you have been talking for, three nights?” When I replied that I did not, he said, “That was a devil.” Bukhārī transmit­ted it.