Musnad Ahmad 1:31

Yazid ibn Harun narrated to us, Sadaqah ibn Musa informed us, from Farqad al-Sabakhi, from Murrah al-Tayyib, from Abu Bakr al-Siddiq, may Allah be pleased with him, from the Prophet, may Allah bless him and grant him peace, who said: "The deceiver shall not enter Paradise, nor the miser, nor the one who reminds others of his favors, nor the one who treats his subordinates badly." "And the first to enter Paradise is the slave, if he obeys Allah and obeys his master."