The Messenger of Allah ﷺ camped beneath a tall tree. Someone other than Abu Qurra said, "Tall trees on the left side of the road, in a watercourse below Harsha. That watercourse adjoins Harsha." Another reported, "It adjoins the foothill of Harsha, with the distance between it and the road being about a bowshot."
وقال نافع إن
أن رسول الله ﷺ نزل تحت سرحة وقال غير أبي قرة سرحات عن يسار الطريق في مسيل دون هرشا ذلك المسيل لاصق على هرشا وقال غيره لاصق بكراع هرشا بينه وبين الطريق قريب من غلوة سهم
Its isnad is sahih, it follows what came before it."Sarahaat," with fatha on the raa, is the plural of "sarha," with sukun, which means the huge tree, as mentioned previously in the commentary on 5597.As for his statement, "and someone other than Abu Qurra said, 'sarahaat,'" the narrator meant here, other than Abu Qurra, was not specified, but it is Anas bin Iyad in his narration from Musa bin Uqba as recorded by Bukhari. Likewise his statement, "and someone else said, 'Do not pray at Kuraa Harsha,'" this too is found in the narration of Anas bin Iyad. Perhaps someone other than Anas narrated that from Musa bin Uqba.Regarding his statement, "in a watercourse below Harsha," Al-Hafiz said that "al-masil" refers to a sloping, low-lying place. As for "Harsha," with fatha on its first letter, sukun on the raa, followed by a dotted shin, and written without a final alif maddah, Al-Bakri said it is a mountain located at the junction of the roads to Madinah and Syria, near Juhfa. "Kuraa Harsha" refers to its edge."Al-ghalwa," with fatha on the dotted letter, is the furthest distance an arrow can reach, though it has also been said to be about two-thirds of a mile."Harsha" is written with an alif in the three source manuscripts here, but written with a yaa in Bukhari and elsewhere, and both spellings are acceptable.