Musnad Ahmad 31:900

'Abd al-Razzaq and Ibn Bakr narrated to us, they said: Ibn Jurayj informed us, he said: 'Umar ibn 'Ata' ibn Abi al-Khuwar informed me, from 'Ubayd Allah ibn 'Iyad and 'Ata' ibn Bakht—both of them informing 'Umar ibn 'Ata'—from Abu Sa'id al-Khudri, that they heard him say: I heard Abu al-Qasim say: "There is no prayer after the morning prayer until the sun rises, and there is no prayer after the afternoon prayer until the night."