It is narrated from the Mother of the Believers, Sayyidah Umm Salamah (may Allah be pleased with her), that she said: "In the blessed time of the Messenger of Allah (peace and blessings be upon him) the state of the people was such that when someone prayed, his gaze would not go beyond the place of his feet."
This hadith is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) only with this chain, and Ibrahim bin al-Mundhir (may Allah have mercy on him) is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب العين / 4456
Hadith Takhrij«أخرجه ابن ماجه فى «سننه» برقم: 1634، والطبراني فى «الأوسط» برقم: 9104»