It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever leads a people in prayer should fear Allah and know that he is a guarantor, and he will be questioned to the extent of what he took responsibility for. If he leads them well, he will have a reward like the reward of those who pray behind him, without their rewards being reduced in any way; and whatever shortcoming there is, its burden will be upon him."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abu al-Jawza' (may Allah have mercy on him) except Yahya bin Abi al-Fadl, and no one narrated it from Yahya except al-Mu'arik; Yusuf bin al-Hajjaj is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 7755
Hadith Gradingمحدثین:إسناده ضعيف لضعف معارك بن عباد
Hadith Takhrij«قال الطبراني: لم يروه عن أبي الجوزاء إلا أبو الفضل يحيى ولا عنه إلا المعارك بن عباد تفرد به يوسف بن الحجاج «الإعلام بسنته عليه الصلاة والسلام بشرح سنن ابن ماجه الإمام، ج 4، ص 73»» «قال الهيثمي: فيه معارك بن عباد ضعفه أحمد والبخاري وأبو زرعة والدارقطني وذكره ابن حبان في الثقات «مجمع الزوائد ومنبع الفوائد، ج 2، ص 66»»