Not graded
Bulugh al-Maram 446b
وَفِي لَفْظٍ لِمُسْلِمٍ: { كُنَّا نَجْمَعُ مَعَهُ إِذَا زَالَتِ اَلشَّمْسُ, ثُمَّ نَرْجِعُ, نَتَتَبَّعُ اَلْفَيْءَ } 1 .
1 - صحيح. رواه مسلم (860) (31).
And in a narration of Muslim:
"We used to offer the Friday prayers with him [Allah's Messenger (ﷺ)] when the sun passed the meridian. We would then return and try to find the afternoon shadow.
Cited in Bulugh al-Maram (No. 446b).