Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 weeks ago

No, it is not sufficient to ask one trustworthy person about which Marja to follow. He must be a high caliber 'Aalim (scholar), yet his witness alone is not sufficient because witness should come from two high caliber 'Aalims. 

Wassalam.