Musannaf Ibn Abi Shayba 13:1960

Abu Bakr narrated to us, he said: Abd al-Rahim ibn Sulayman narrated to us, from Abdullah ibn Muslim, from Ibn Sabit, from Abdullah ibn Amr, who said: In Paradise, there is a palace called 'Awn. Around it are meadows, and the meadows have five thousand gates. None shall dwell in it, or none shall enter it, except a prophet, or a truthful person (siddiq), or a martyr, or a just leader.