Abd al-Rahman bin Abi Sa'id al-Khudri narrates from his father, Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him), that the Messenger of Allah (peace and blessings be upon him) said: "When one of you prays, let him stand close to a sutrah (screen)," and then he related the hadith with the meaning of the previous one.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3446