The Messenger of Allah ﷺ was carrying Husayn bin Ali on his shoulder when a man said, "What an excellent mount you are riding, young boy!"The Prophet ﷺ replied, "And what an excellent rider he is."He said, this is a hasan gharib hadith which we know only through this chain. Zamah bin Salih has been weakened by some scholars of hadith on account of his memory.
حدثنا محمد بن بشار حدثنا أبو عامر العقدي حدثنا زمعة بن صالح عن سلمة بن وهرام عن عكرمة
كان رسول الله ﷺ حامل الحسين بن علي على عاتقه فقال رجل نعم المركب ركبت يا غلام فقال النبي ﷺ ونعم الراكب هو قال هذا حديث حسن غريب لا نعرفه إلا من هذا الوجه وزمعة بن صالح قد ضعفه بعض أهل الحديث من قبل حفظه
No references are available.
Its isnad is daif. Ibn Adi transmitted it in 3/1085 from the hadith of Abu Amir Aqadi, with the same chain. Zama bin Salih is daif, and it has daif corroborating narrations found in Ibn Abu Shayba, 12/102, and elsewhere.