Jami` at-Tirmidhi 588
جامع الترمذي#588Hasanحَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا وَكِيعٌ، عَنْ عَبْدِ اللَّهِ بْنِ سَعِيدِ بْنِ أَبِي هِنْدٍ، عَنْ بَعْضِ، أَصْحَابِ عِكْرِمَةَ أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يَلْحَظُ فِي الصَّلاَةِ . فَذَكَرَ نَحْوَهُ . قَالَ وَفِي الْبَابِ عَنْ أَنَسٍ وَعَائِشَةَ .
Sa'eed bin Abi Hind narrated from some of the companions of Ikrimah:"The Prophet would glance during Salat" and he mentioned a similar narration
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
In-book reference: 6:45