«إذا كانوا ثلاثة فليؤمهم أحدهم وأحقهم بالإمامة أقرؤهم»
The Prophet (peace and blessings be upon him) said:
"When there are three people, one of them should lead them in prayer, and the one most entitled to lead is the one among them with the most knowledge of the Noble Qur'an."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 773