Musannaf Ibn Abi Shayba 3:499

Ibn ‘Ulayyah narrated to us, from Layth, from al-Mughirah, from Abu ‘Ubaydah ibn ‘Abd Allah, from his father, who said: Do not pray while there is a gap between you and the Qiblah. Move forward toward the Qiblah or screen yourself with a pillar.