Abu Ali al-Hamdani (may Allah have mercy on him), who lived in Alexandria, says: I once set out on a journey, and Uqbah bin Amir (may Allah be pleased with him) was with me. We said to him: "Lead us in prayer." He said: "I am not going to lead. I heard the Prophet (peace and blessings be upon him) say: 'Whoever leads the people and completes the prayer at the correct time, there is reward for him and for them; and whoever falls short in any of that, the burden is on him and not on those who follow him.'"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5331