He prayed Maghrib at Jam with one iqamah and Isha with another iqamah. Then he reported that Ibn Umar did the same, and Ibn Umar reported that the Prophet ﷺ did the same.
حدثنا عبد الرحمن حدثنا شعبة عن الحكم وسلمة بن كهيل
أنه صلى المغرب بجمع والعشاء بإقامة ثم حدث عن ابن عمر أنه صنع مثل ذلك وحدث ابن عمر أن النبي ﷺ صنع مثل ذلك
Its isnad is sahih, and it is an abridgment of 4894, and a fuller version is 5287. In M, it reads, "He prayed Maghrib and Isha at Jam with a single iqamah," and what is here is what is established in H K.