Musannaf Ibn Abi Shayba 17:30

Abu Bakr narrated to us, he said: Yazid ibn al-Miqdam ibn Shurayh narrated to us, from his father, al-Miqdam ibn Shurayh, from his father, Shurayh, from his grandfather, Hani ibn Yazid, who said: I said, "O Messenger of Allah, inform me of something that will make Paradise obligatory for me." He said, "You must use good speech and provide food."