Jami` at-Tirmidhi 588
جامع الترمذي#588HasanSa'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
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Zubair Ali ZaiHasan
In-book reference: 6:45