Narrated Isma'il bin 'Ubaid bin Rifa'ah:
From his father, from his grandfather, that he went with the Messenger of Allah (ﷺ) to the Musalla, and he saw the people doing business so he said: 'O people of trade!' and they replied to the Messenger of Allah (ﷺ) turning their necks and their gazes towards him, and he said: Indeed the merchants will be resurrected on the Day of judgement with the wicked, except the one who has Taqwa of Allah, who behaves charitably and is truthful.'
[Abu 'Eisa said:] This Hadith is Hasan Sahih. And they also say Isma'il bin 'Ubaidullah bin Rifa'ah.