Hadith 996
وَعَنْ أَنَسٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «يَا أَنَسُ اجْعَلْ بَصَرَكَ حَيْثُ تَسْجُدُ» . رَوَاهُ الْبَيْهَقِيُّ فِي سُنَنِهِ الْكَبِيرِ مِنْ طَرِيق الْحسن عَن أنس يرفعهُ
Anas told that the Prophet said, “Keep looking in the direction towards which you prostrate yourself, Anas.” Baihaqi transmitted it in [Kitab] as-sunan al-kabir through al-Hasan from Anas, tracing it back to the Prophet.